Year	Percent
1950	10.57433
1955	11.16072
1960	11.56908
1965	12.66244
1970	13.87488
1975	14.81258
1980	15.27626
1985	16.16442
1990	21.05935
1995	22.65551
2000	23.95049
2005	24.87686
2010	26.90392
2015	29.20827
2020	31.67366
2025	34.44356
2030	37.04206
2035	40.16983
2040	42.83008
2045	44.35558
2050	44.93038
2055	45.22079
2060	45.5655
2065	45.73321
2070	45.68845
2075	45.28065
2080	44.59947
2085	43.96795
2090	43.59942
2095	43.42736
2100	43.3402