Year

Population

(Billion)

Affluence

(GDP per capita $)

Technology

Environmental impact (I) (times)

2000

1.3 - (1.0)

800 - (1.0)

1

1.0

2020

1.4 - (1.1)

3000 - (3.75)

1

4.1

2050

1.5 - (1.15)

10,000 - (12.5)

1

14.4