Year	Percent
1950	16.23597
1955	15.95006
1960	15.57597
1965	15.12038
1970	14.59104
1975	13.88016
1980	13.16266
1985	12.46072
1990	11.72658
1995	11.34137
2000	10.89299
2005	10.46261
2010	10.23137
2015	10.23436
2020	10.54167
2025	11.08801
2030	11.85504
2035	12.78372
2040	13.87327
2045	15.09814
2050	16.3504
2055	17.57465
2060	18.73966
2065	19.81967
2070	20.79362
2075	21.64012
2080	22.35638
2085	22.94931
2090	23.45205
2095	23.8892
2100	24.28509