Year	Percent
1950	6.55771
1955	7.30711
1960	8.24936
1965	9.29883
1970	10.3485
1975	11.17662
1980	11.68892
1985	12.19161
1990	14.51141
1995	14.94405
2000	15.29948
2005	15.70603
2010	16.35788
2015	17.16814
2020	17.99275
2025	18.79663
2030	19.63003
2035	20.82835
2040	22.66521
2045	24.11657
2050	25.56966
2055	26.99747
2060	28.20796
2065	29.47162
2070	30.66084
2075	31.83009
2080	32.89681
2085	33.8768
2090	34.77856
2095	35.60835
2100	36.37322