Year	Percent
1950	12.00626
1955	12.56808
1960	12.87484
1965	12.80934
1970	12.67326
1975	12.49649
1980	11.82137
1985	12.09714
1990	12.36064
1995	12.36826
2000	13.07666
2005	14.29894
2010	15.49041
2015	16.95801
2020	18.70809
2025	20.02761
2030	22.43213
2035	24.3676
2040	25.67652
2045	26.76209
2050	26.56065
2055	26.5323
2060	26.53868
2065	26.65282
2070	26.97085
2075	27.08163
2080	26.97159
2085	26.68096
2090	26.34012
2095	26.07553
2100	25.91657