Year	Percent
1950	13.03308
1955	11.7534
1960	11.25226
1965	11.07487
1970	10.72949
1975	10.7175
1980	10.878
1985	10.8385
1990	10.7651
1995	10.59912
2000	10.63444
2005	11.4834
2010	12.49991
2015	13.43108
2020	14.46738
2025	15.28015
2030	16.47077
2035	18.23222
2040	19.61917
2045	20.46423
2050	21.08694
2055	21.47195
2060	22.05939
2065	22.84747
2070	23.39043
2075	23.63993
2080	23.73298
2085	23.83483
2090	23.98841
2095	24.1389
2100	24.19965