Year	Percent
1950	8.28658
1955	7.54544
1960	6.88783
1965	6.47609
1970	6.25692
1975	6.13369
1980	6.03892
1985	6.21905
1990	7.17202
1995	7.42007
2000	7.6208
2005	8.18444
2010	8.78129
2015	9.71919
2020	10.49743
2025	11.24643
2030	12.15479
2035	13.31711
2040	14.8256
2045	16.53875
2050	18.32062
2055	20.19472
2060	22.15553
2065	24.01465
2070	25.67958
2075	27.13049
2080	28.53994
2085	29.88082
2090	31.13021
2095	32.27113
2100	33.31118