Year

Continent

2015

2030

2050

Americas

9.4 (20.1%)

15.8 (21.2%)

29.9 (22.7%)

Europe

10.5 (22.5%)

13.4 (17.9%)

18.6 (14.2%)

Asia

22.9 (48.9%)

38.5 (51.5%)

67.2 (51.1%)

Africa

4.0 (8.5%)

7.0 (9.4%)

15.8 (12%)

World

46.8

74.7

131.5