Year	Percent
1950	10.40689
1955	11.22987
1960	11.09304
1965	12.29796
1970	12.12476
1975	12.03155
1980	11.99157
1985	12.03247
1990	12.23042
1995	12.08033
2000	11.61163
2005	11.25155
2010	10.96308
2015	10.41527
2020	9.76863
2025	9.13837
2030	8.81282
2035	8.45863
2040	8.07871
2045	7.68284
2050	7.30604
2055	6.96016
2060	6.6575
2065	6.38581
2070	6.14394
2075	5.92196
2080	5.72754
2085	5.55679
2090	5.41714
2095	5.29701
2100	5.1909