Population Dynamics

Current population

7.9 B

Current population growth rate

1% per year

Population in 1950

2.6B

Population in 1999

6B

Population in October, 2011

7 B

Population in 1987

5B

Estimated increase in population growth

2B people in the next 30 years

Estimated increase in population

7.9 B tp 9.7 B by 2050, 11 B by 2100

7B people are concentrated in how much %of land

20%

Population density for underdeveloped countries

697 people per sqkm

Population density for developed countries

238 people per sqkm

Riverrine plains of Asia take up how much of the world’s land area?

1/5

In Europe-Share of land area, Share of population

1/25, 1/9, 2nd largest continent

Areas of moderate density

Central China

Central USA

Deccan Plateau

Tropical west Africa

Eastern Europe

Russia

Current Population is growing at a rate of

1% per year

Current avg population Change

81M per year

Annual growth rate in 1960

2% and above

Low Birth Rate

10-20

High Birth rate

40-50