Bar chart with 9 groups with 6 items per group.
Group 1, 1921
Item 1, Europe 75.9%
Item 2, USA 19.12%
Item 3, Asia 2.74%
Item 4, Caribbe 0.22%
Item 5, Latin America 0%
Item 6, Africa 0%
Group 2, 1931
Item 1, Europe 80.32%
Item 2, USA 14.93%
Item 3, Asia 2.63%
Item 4, Caribbe 0.2%
Item 5, Latin America 0%
Item 6, Africa 0%
Group 3, 1941
Item 1, Europe 79.94%
Item 2, USA 15.48%
Item 3, Asia 2.2%
Item 4, Caribbe 0.2%
Item 5, Latin America 0%
Item 6, Africa 0%
Group 4, 1951
Item 1, Europe 83.21%
Item 2, USA 13.69%
Item 3, Asia 1.8%
Item 4, Caribbe 0.19%
Item 5, Latin America 0%
Item 6, Africa 0%
Group 5, 1961
Item 1, Europe 85.71%
Item 2, USA 9.98%
Item 3, Asia 2.03%
Item 4, Caribbe 0.43%
Item 5, Latin America 0%
Item 6, Africa 0%
Group 6, 1971
Item 1, Europe 79.43%
Item 2, USA 9.4%
Item 3, Asia 3.62%
Item 4, Caribbe 2.07%
Item 5, Latin America 1.09%
Item 6, Africa 1.38%
Group 7, 1981
Item 1, Europe 66.76%
Item 2, USA 8.07%
Item 3, Asia 14.05%
Item 4, Caribbe 3.5%
Item 5, Latin America 2.79%
Item 6, Africa 2.66%
Group 8, 1991
Item 1, Europe 54.45%
Item 2, USA 5.74%
Item 3, Asia 24.52%
Item 4, Caribbe 5.35%
Item 5, Latin America 5.05%
Item 6, Africa 3.83%
Group 9, 2001
Item 1, Europe 41.99%
Item 2, USA 4.37%
Item 3, Asia 36.51%
Item 4, Caribbe 5.4%
Item 5, Latin America 5.59%
Item 6, Africa 5.19%