Year	Percent
1950	11.95597
1955	12.04451
1960	10.78936
1965	12.79064
1970	12.98982
1975	13.22459
1980	13.31577
1985	13.29514
1990	13.63067
1995	14.21793
2000	13.94756
2005	13.5085
2010	12.66835
2015	12.16496
2020	12.5149
2025	12.81115
2030	11.74519
2035	10.82204
2040	10.20071
2045	9.81817
2050	9.45023
2055	9.02416
2060	8.55106
2065	8.06206
2070	7.64699
2075	7.29818
2080	7.01513
2085	6.75612
2090	6.50059
2095	6.27947
2100	6.08646