Year	Percent
1950	10.31456
1955	9.71026
1960	7.7418
1965	8.56794
1970	7.70964
1975	8.33337
1980	7.78147
1985	7.87146
1990	7.64352
1995	7.51753
2000	6.80133
2005	5.64059
2010	5.17838
2015	4.98238
2020	4.9716
2025	5.32424
2030	4.72207
2035	4.1996
2040	3.92176
2045	3.95526
2050	4.12816
2055	4.33551
2060	4.42772
2065	4.35958
2070	4.25785
2075	4.25286
2080	4.36465
2085	4.51894
2090	4.62658
2095	4.64439
2100	4.59207