Year	Percent
1950	21.75619
1955	18.89878
1960	14.72056
1965	13.20945
1970	13.87614
1975	14.08053
1980	14.81145
1985	13.69659
1990	11.85934
1995	12.53642
2000	14.32078
2005	17.28312
2010	19.35937
2015	20.38229
2020	21.1129
2025	22.44164
2030	25.03899
2035	27.29225
2040	27.87043
2045	26.94566
2050	26.15276
2055	25.93519
2060	26.67052
2065	27.53685
2070	27.17917
2075	26.24259
2080	25.52744
2085	25.37266
2090	25.47892
2095	25.3956
2100	24.98681