Year	Percent
1950	16.37254
1955	16.50983
1960	16.55785
1965	16.41467
1970	16.07117
1975	15.46545
1980	14.81683
1985	14.19559
1990	13.68921
1995	13.30925
2000	12.89907
2005	12.53509
2010	12.55518
2015	13.07576
2020	13.90627
2025	14.91086
2030	15.87215
2035	16.84554
2040	18.05198
2045	19.435
2050	21.02327
2055	22.37693
2060	23.45912
2065	24.28249
2070	24.87696
2075	25.45138
2080	25.93671
2085	26.30618
2090	26.55109
2095	26.71157
2100	26.78513