miercuri, 1 decembrie 2010

How fast is the world's population growing ?

One of the major problems for our future is the ever growing number of people living on Earth. We are referring to this in several articles on this site. Below you can find first a graph about the population by geographical area and by year, starting in 1950 until the year 2050.
The second graph shows the population density by geographical area by year, i.e. the number of people living per square kilometre. Further down, we provide lists of the current and predicted population by country.

How fast is the world's population growing?

The world's current growth rate is about 1.3%, representing a doubling time of 54 years. We can expect the world's population of approximately 6 billion to become 12 billion by 2054 if the current rate of growth continues. The world's growth rate peaked in the 1960s at 2% and a doubling time of 35 years.


The rate of national growth is expressed as a percentage for each country, commonly between about 0.1% and 3% annually. You'll find two percentages associated with population - natural growth and overall growth. Natural growth represents the births and deaths in a country's population and does not take into account migration. The overall growth rate takes migration into account. For example, Canada's natural growth rate is 0.3% while its overall growth rate is 0.9%, due to Canada's open immigration policies. In the U.S., the natural growth rate is 0.6% and overall growth is 0.9%. The growth rate of a country provides demographers and geographers with a good contemporary variable for current growth and for comparison between countries or regions. For most purposes, the overall growth rate is the more frequently utilized.
The growth rate can be used to determine a country or region or even the planet's "doubling time," which tells us how long it will take for a country's current population to double. This length of time is determined by dividing the growth rate into 70. The number 70 comes from the natural log of 2, which is .70.
Given Canada's overall growth of 0.9% in the year 2006, we divide 70 by .9 (from the 0.9%) and yield a value of 77.7 years. Thus, in 2083, if the current rate of growth remains constant, Canada's population will double from its current 33 million to 66 million.
However, if we look at the U.S. Census Bureau's International Data Base Summary Demographic Data for Canada, we see that Canada's overall growth rate is expected to decline to 0.6% by 2025. With a growth rate of 0.6% in 2025, Canada's population would take about 117 years to double (70 / 0.6 = 116.666).
The world's current (overall as well as natural) growth rate is about 1.14%, representing a doubling time of 61 years. We can expect the world's population of 6.5 billion to become 13 billion by 2067 if current growth continues. The world's growth rate peaked in the 1960s at 2% and a doubling time of 35 years.
Most European countries have low growth rates. In the United Kingdom, the rate is 0.2%, in Germany it's 0.0%, and in France, 0.4%. Germany's zero rate of growth includes a natural increase of -0.2%, without immigration, Germany would be shrinking, like the Czech Republic.
The Czech Republic and some other European countries' growth rate is actually negative (on average, women in the Czech Republic give birth to 1.2 children, which is below the number to yield zero population growth, approximately 2.1 children). The Czech Republic's natural growth rate of -0.1 can not be used to determine doubling time because the population is actually shrinking in size.
Many Asian and African countries have high growth rates. Afghanistan has a current growth rate of 4.8%, representing a doubling time of 14.5 years! If Afghanistan's growth rate remained the same (which is very unlikely and the country's projected growth rate for 2025 is a mere 2.3%), then the population of 30 million would become 60 million in 2020, 120 million in 2035, 280 million in 2049, 560 million in 2064, and 1.12 billion in 2078! This is a ridiculous expectation. As you can see, population growth percentages is better utilized for short term projections.
Increased population growth generally represents problems for a country - it means increased need for food, infrastructure, and services. These are expenses that most high-growth countries have little ability to provide today, let alone if population rises dramatically.

Age-Sex Pyramids

Dateline: 07/14/97 The most important demographic characteristic of a population is its age-sex structure. Age-sex pyramids (also known as population pyramids) graphically display this information to improve understanding and ease comparison.
Age-sex pyramids display the percentage or actual amount of a population broken down by gender and age. The five-year age increments on the y-axis allow the pyramid to vividly reflect long term trends in the birth and death rates but also reflect shorter term baby-booms, wars, and epidemics.
There are three key types of population pyramids:

Rapid Growth Philippines Pyramid
This pyramid of the Philippines shows a triangle-shaped pyramid and reflects a high growth rate of about 2.1 percent annually.
Slow Growth U.S. Pyramid
In the United States, the population is growing at a rate of about 1.7 percent annually. This growth rate is reflected in the more square-like structure of the pyramid. Note the lump in the pyramid between the ages of about 35 to 50. This large segment of the population is the post-World War II "baby boom." As this population ages and climbs up the pyramid, there will be a much greater demand for medical and other geriatric services. An online animated population pyramid from 1950 to 2050 shows the aging of the boomers.
Negative Growth Germany Pyramid
Germany is experiencing a period of negative growth (-0.1%). As negative growth in a country continues, the population is reduced. A population can shrink due to a low birth rate and a stable death rate. Increased emigration may also be a contributor to a declining population. To create your own age-sex pyramids for almost any country in the world using current and projected population, visit the U.S. Census Bureau's wonderful International Population Pyramids site. Enjoy!





World population by geographical area from 1950 to 2050






World population by continent from 1950 to 2050

Population density by year and by geographical area:


World population density 1950 to 2050

Population by country for 2007 and 2050 (alphabetical order)


20072050
Afghanistan31'889'92381'933'479
Albania 3'600'5234'016'945
Algeria 33'333'21643'983'870
American Samoa57'66335'129
Andorra 71'82269'129
Angola 12'263'59624'746'652
Anguilla13'67715'921
Antigua and Barbuda 69'48169'259
Argentina 40'301'92748'740'060
Armenia 2'971'6502'943'441
Aruba72'19469'990
Australia 20'434'17624'175'783
Austria 8'199'7837'520'950
Azerbaijan 8'120'2479'955'428
Bahamas, The 305'655324'052
Bahrain 708'573973'412
Bangladesh 150'448'339279'955'405
Barbados280'946274'523
Belarus 9'724'7237'738'613
Belgium 10'392'2269'882'599
Belize 294'385541'734
Benin8'078'31416'356'458
Bermuda 66'16366'025
Bhutan 2'327'8494'653'447
Bolivia 9'119'15213'772'819
Bosnia and Herzegovina 4'552'1983'891'669
Botswana1'639'1311'411'662
Brazil 190'010'647228'426'737
Brunei 386'511600'998
Bulgaria7'322'8584'651'477
Burkina Faso 14'326'20343'656'786
Burma47'373'95854'430'334
Burundi 8'390'50522'852'556
Cambodia14'131'85825'089'909
Cameroon18'060'38234'908'839
Canada 33'390'14141'429'579
Cape Verde 423'613380'614
Cayman Islands46'60090'230
Central African Republic 4'369'0386'502'151
Chad 10'238'80729'547'665
Chile16'284'74119'244'843
China1'321'851'8881'424'161'948
Colombia44'227'55064'534'230
Comoros 710'9601'835'099
Congo (Brazzaville) 3'800'6109'618'358
Congo (Kinshasa) 64'606'759183'177'415
Cook Islands 21'75024'930
Costa Rica 4'133'8845'696'700
Cote d'Ivoire 18'013'40932'400'664
Croatia 4'493'3123'864'201
Cuba 11'416'98710'477'677
Cyprus 788'457841'102
Czech Republic10'228'7448'540'221
Denmark 5'468'1205'575'147
Djibouti496'374993'011
Dominica68'92581'961
Dominican Republic 9'365'81814'657'962
East Timor 1'084'9711'942'734
Ecuador 13'755'68020'332'088
Egypt80'264'543126'920'512
El Salvador6'939'68812'039'149
Equatorial Guinea551'2011'063'071
Eritrea 4'906'58510'164'076
Estonia 1'315'912861'913
Ethiopia76'511'887144'716'331
Faroe Islands 47'51153'050
Fiji 918'6751'447'573
Finland 5'238'4604'819'615
France 61'083'91661'017'122
French Guiana 203'321317'377
French Polynesia 278'633390'581
Gabon1'454'8673'221'749
Gambia, The1'688'3594'068'861
Gaza Strip 1'482'4054'209'026
Georgia 4'646'0033'784'724
Germany 82'400'99673'607'121
Ghana22'931'29938'735'638
Gibraltar 27'96725'617
Greece 10'706'29010'035'935
Greenland 56'34456'644
Grenada 89'97187'136
Guadeloupe 456'698528'062
Guam 173'456242'692
Guatemala 12'728'11122'995'434
Guernsey65'57360'606
Guinea 9'947'81428'713'509
Guinea-Bissau 1'472'0412'895'666
Guyana 769'095597'806
Haiti8'706'49719'807'275
Honduras7'483'76312'641'869
Hong Kong S.A.R. 6'980'4126'172'725
Hungary 9'956'1088'374'619
Iceland 301'931350'922
India1'129'866'1541'807'878'574
Indonesia 234'693'997313'020'847
Iran 65'397'52181'490'039
Iraq 27'499'63856'360'779
Ireland 4'109'0865'396'215
Isle of Man75'83180'131
Israel 6'426'6798'516'835
Italy58'147'73350'389'841
Jamaica 2'780'1323'499'068
Japan127'467'97299'886'568
Jersey 91'32184'077
Jordan 6'053'19311'772'789
Kazakhstan 15'284'92915'099'700
Kenya36'913'72165'175'864
Kiribati107'817235'342
Korea, North 23'301'72526'363'688
Korea, South 49'044'79045'224'224
Kuwait 2'505'5596'374'800
Kyrgyzstan 5'284'1498'237'623
Laos 6'521'99813'176'153
Latvia 2'259'8101'544'073
Lebanon 3'921'2784'940'731
Lesotho 2'012'6491'448'643
Liberia 3'193'9427'072'402
Libya6'036'91410'817'176
Liechtenstein 34'24735'776
Lithuania 3'575'4392'787'516
Luxembourg 480'222720'603
Macau S.A.R. 456'989487'488
Macedonia 2'055'9151'990'728
Madagascar 19'448'81556'513'827
Malawi 13'603'18129'820'957
Malaysia24'821'28643'122'397
Maldives369'031815'031
Mali 11'995'40240'002'414
Malta401'880395'639
Marshall Islands 61'782102'761
Martinique 439'202478'627
Mauritania 3'270'0658'635'801
Mauritius 1'250'8821'451'156
Mayotte 208'807592'627
Mexico 108'700'891147'907'650
Micronesia, Federated States of 107'86274'296
Moldova 4'320'4903'620'416
Monaco 32'67132'964
Mongolia2'874'1274'086'025
Montenegro 684'736577'654
Montserrat 9'53811'908
Morocco 33'757'17550'871'553
Mozambique 20'905'58541'842'274
Namibia 2'055'0801'795'852
Nauru13'52822'696
Nepal28'901'79053'293'874
Netherlands16'570'61317'334'090
Netherlands Antilles223'472252'578
New Caledonia 221'943290'682
New Zealand4'115'7714'842'397
Nicaragua 5'675'3569'437'504
Niger12'894'86534'419'502
Nigeria 135'031'164356'523'597
Northern Mariana Islands 84'546143'132
Norway 4'627'9264'966'385
Oman 3'204'8978'337'734
Pakistan169'270'617294'995'104
Palau20'84226'300
Panama 3'242'1735'038'122
Papua New Guinea 5'795'88710'670'394
Paraguay6'667'14714'635'743
Peru 28'674'75738'300'067
Philippines91'077'287147'630'852
Poland 38'518'24132'084'570
Portugal10'642'8369'933'334
Puerto Rico3'944'2593'770'496
Qatar907'2291'239'216
Reunion 798'0941'132'283
Romania 22'276'05618'678'226
Russia 141'377'752109'187'353
Rwanda 9'907'50925'128'735
Saint Helena 7'5437'247
Saint Kitts and Nevis 39'34952'348
Saint Lucia170'649235'420
Saint Pierre and Miquelon 7'0366'355
Saint Vincent and the Grenadines118'14992'335
Samoa176'615170'739
San Marino 29'61535'335
Sao Tome and Principe 199'579502'489
Saudi Arabia 27'601'03849'706'851
Senegal 12'521'85127'519'852
Serbia 10'150'2659'274'767
Seychelles 81'89589'713
Sierra Leone 6'144'56213'998'936
Singapore 4'553'0094'635'110
Slovakia5'447'5024'943'616
Slovenia2'009'2451'596'947
Solomon Islands 566'8421'110'514
Somalia 9'118'77325'499'605
South Africa 43'997'82833'002'952
Spain40'448'19135'564'293
Sri Lanka 20'926'31524'920'558
Sudan42'292'92984'192'309
Suriname470'784617'249
Swaziland 1'133'066751'328
Sweden 9'031'0889'084'788
Switzerland7'554'6617'296'092
Syria19'314'74734'437'235
Taiwan 23'174'29423'203'650
Tajikistan 7'076'59812'132'365
Tanzania38'139'64071'949'135
Thailand65'068'14969'268'817
Togo 5'701'57914'714'623
Tonga116'921188'340
Trinidad and Tobago 1'056'608622'011
Tunisia 10'276'15812'462'798
Turkey 71'158'64786'473'786
Turkmenistan 5'136'2629'626'193
Turks and Caicos Islands 21'74642'384
Tuvalu 11'99220'018
Uganda 30'262'610128'007'514
Ukraine 46'299'86233'573'842
United Arab Emirates2'642'5663'696'962
United Kingdom60'776'23863'977'435
United States 301'139'947420'080'587
Uruguay 3'447'4963'728'264
Uzbekistan 27'780'05948'597'111
Vanuatu 211'971310'486
Venezuela 26'084'66237'106'394
Vietnam 85'262'356107'772'641
Virgin Islands108'448103'303
Virgin Islands, British23'55234'038
Wallis and Futuna16'30920'434
West Bank 2'535'9275'580'321
Western Sahara382'617996'674
Yemen22'211'74371'119'251
Zambia 11'477'44718'435'053
Zimbabwe12'311'14312'221'257

Population by country for 2007 and 2050 (ordered by population in 2050)


20072050
India1'129'866'1541'807'878'574
China1'321'851'8881'424'161'948
United States 301'139'947420'080'587
Nigeria 135'031'164356'523'597
Indonesia 234'693'997313'020'847
Pakistan169'270'617294'995'104
Bangladesh 150'448'339279'955'405
Brazil 190'010'647228'426'737
Congo (Kinshasa) 64'606'759183'177'415
Mexico 108'700'891147'907'650
Philippines91'077'287147'630'852
Ethiopia76'511'887144'716'331
Uganda 30'262'610128'007'514
Egypt80'264'543126'920'512
Russia 141'377'752109'187'353
Vietnam 85'262'356107'772'641
Japan127'467'97299'886'568
Turkey 71'158'64786'473'786
Sudan42'292'92984'192'309
Afghanistan31'889'92381'933'479
Iran 65'397'52181'490'039
Germany 82'400'99673'607'121
Tanzania38'139'64071'949'135
Yemen22'211'74371'119'251
Thailand65'068'14969'268'817
Kenya36'913'72165'175'864
Colombia44'227'55064'534'230
United Kingdom60'776'23863'977'435
France 61'083'91661'017'122
Madagascar 19'448'81556'513'827
Iraq 27'499'63856'360'779
Burma47'373'95854'430'334
Nepal28'901'79053'293'874
Morocco 33'757'17550'871'553
Italy58'147'73350'389'841
Saudi Arabia 27'601'03849'706'851
Argentina 40'301'92748'740'060
Uzbekistan 27'780'05948'597'111
Korea, South 49'044'79045'224'224
Algeria 33'333'21643'983'870
Burkina Faso 14'326'20343'656'786
Malaysia24'821'28643'122'397
Mozambique 20'905'58541'842'274
Canada 33'390'14141'429'579
Mali 11'995'40240'002'414
Ghana22'931'29938'735'638
Peru 28'674'75738'300'067
Venezuela 26'084'66237'106'394
Spain40'448'19135'564'293
Cameroon18'060'38234'908'839
Syria19'314'74734'437'235
Niger12'894'86534'419'502
Ukraine 46'299'86233'573'842
South Africa 43'997'82833'002'952
Cote d'Ivoire 18'013'40932'400'664
Poland 38'518'24132'084'570
Malawi 13'603'18129'820'957
Chad 10'238'80729'547'665
Guinea 9'947'81428'713'509
Senegal 12'521'85127'519'852
Korea, North 23'301'72526'363'688
Somalia 9'118'77325'499'605
Rwanda 9'907'50925'128'735
Cambodia14'131'85825'089'909
Sri Lanka 20'926'31524'920'558
Angola 12'263'59624'746'652
Australia 20'434'17624'175'783
Taiwan 23'174'29423'203'650
Guatemala 12'728'11122'995'434
Burundi 8'390'50522'852'556
Ecuador 13'755'68020'332'088
Haiti8'706'49719'807'275
Chile16'284'74119'244'843
Romania 22'276'05618'678'226
Zambia 11'477'44718'435'053
Netherlands16'570'61317'334'090
Benin8'078'31416'356'458
Kazakhstan 15'284'92915'099'700
Togo 5'701'57914'714'623
Dominican Republic 9'365'81814'657'962
Paraguay6'667'14714'635'743
Sierra Leone 6'144'56213'998'936
Bolivia 9'119'15213'772'819
Laos 6'521'99813'176'153
Honduras7'483'76312'641'869
Tunisia 10'276'15812'462'798
Zimbabwe12'311'14312'221'257
Tajikistan 7'076'59812'132'365
El Salvador6'939'68812'039'149
Jordan 6'053'19311'772'789
Libya6'036'91410'817'176
Papua New Guinea 5'795'88710'670'394
Cuba 11'416'98710'477'677
Eritrea 4'906'58510'164'076
Greece 10'706'29010'035'935
Azerbaijan 8'120'2479'955'428
Portugal10'642'8369'933'334
Belgium 10'392'2269'882'599
Turkmenistan 5'136'2629'626'193
Congo (Brazzaville) 3'800'6109'618'358
Nicaragua 5'675'3569'437'504
Serbia 10'150'2659'274'767
Sweden 9'031'0889'084'788
Mauritania 3'270'0658'635'801
Czech Republic10'228'7448'540'221
Israel 6'426'6798'516'835
Hungary 9'956'1088'374'619
Oman 3'204'8978'337'734
Kyrgyzstan 5'284'1498'237'623
Belarus 9'724'7237'738'613
Austria 8'199'7837'520'950
Switzerland7'554'6617'296'092
Liberia 3'193'9427'072'402
Central African Republic 4'369'0386'502'151
Kuwait 2'505'5596'374'800
Hong Kong S.A.R. 6'980'4126'172'725
Costa Rica 4'133'8845'696'700
West Bank 2'535'9275'580'321
Denmark 5'468'1205'575'147
Ireland 4'109'0865'396'215
Panama 3'242'1735'038'122
Norway 4'627'9264'966'385
Slovakia5'447'5024'943'616
Lebanon 3'921'2784'940'731
New Zealand4'115'7714'842'397
Finland 5'238'4604'819'615
Bhutan 2'327'8494'653'447
Bulgaria7'322'8584'651'477
Singapore 4'553'0094'635'110
Gaza Strip 1'482'4054'209'026
Mongolia2'874'1274'086'025
Gambia, The1'688'3594'068'861
Albania 3'600'5234'016'945
Bosnia and Herzegovina 4'552'1983'891'669
Croatia 4'493'3123'864'201
Georgia 4'646'0033'784'724
Puerto Rico3'944'2593'770'496
Uruguay 3'447'4963'728'264
United Arab Emirates2'642'5663'696'962
Moldova 4'320'4903'620'416
Jamaica 2'780'1323'499'068
Gabon1'454'8673'221'749
Armenia 2'971'6502'943'441
Guinea-Bissau 1'472'0412'895'666
Lithuania 3'575'4392'787'516
Macedonia 2'055'9151'990'728
East Timor 1'084'9711'942'734
Comoros 710'9601'835'099
Namibia 2'055'0801'795'852
Slovenia2'009'2451'596'947
Latvia 2'259'8101'544'073
Mauritius 1'250'8821'451'156
Lesotho 2'012'6491'448'643
Fiji 918'6751'447'573
Botswana1'639'1311'411'662
Qatar907'2291'239'216
Reunion 798'0941'132'283
Solomon Islands 566'8421'110'514
Equatorial Guinea551'2011'063'071
Western Sahara382'617996'674
Djibouti496'374993'011
Bahrain 708'573973'412
Estonia 1'315'912861'913
Cyprus 788'457841'102
Maldives369'031815'031
Swaziland 1'133'066751'328
Luxembourg 480'222720'603
Trinidad and Tobago 1'056'608622'011
Suriname470'784617'249
Brunei 386'511600'998
Guyana 769'095597'806
Mayotte 208'807592'627
Montenegro 684'736577'654
Belize 294'385541'734
Guadeloupe 456'698528'062
Sao Tome and Principe 199'579502'489
Macau S.A.R. 456'989487'488
Martinique 439'202478'627
Malta401'880395'639
French Polynesia 278'633390'581
Cape Verde 423'613380'614
Iceland 301'931350'922
Bahamas, The 305'655324'052
French Guiana 203'321317'377
Vanuatu 211'971310'486
New Caledonia 221'943290'682
Barbados280'946274'523
Netherlands Antilles223'472252'578
Guam 173'456242'692
Saint Lucia170'649235'420
Kiribati107'817235'342
Tonga116'921188'340
Samoa176'615170'739
Northern Mariana Islands 84'546143'132
Virgin Islands108'448103'303
Marshall Islands 61'782102'761
Saint Vincent and the Grenadines118'14992'335
Cayman Islands46'60090'230
Seychelles 81'89589'713
Grenada 89'97187'136
Jersey 91'32184'077
Dominica68'92581'961
Isle of Man75'83180'131
Micronesia, Federated States of 107'86274'296
Aruba72'19469'990
Antigua and Barbuda 69'48169'259
Andorra 71'82269'129
Bermuda 66'16366'025
Guernsey65'57360'606
Greenland 56'34456'644
Faroe Islands 47'51153'050
Saint Kitts and Nevis 39'34952'348
Turks and Caicos Islands 21'74642'384
Liechtenstein 34'24735'776
San Marino 29'61535'335
American Samoa57'66335'129
Virgin Islands, British23'55234'038
Monaco 32'67132'964
Palau20'84226'300
Gibraltar 27'96725'617
Cook Islands 21'75024'930
Nauru13'52822'696
Wallis and Futuna16'30920'434
Tuvalu 11'99220'018
Anguilla13'67715'921
Montserrat 9'53811'908
Saint Helena 7'5437'247
Saint Pierre and Miquelon 7'0366'355
Publicat de la