Year	Percent
1950	15.2943
1955	15.95185
1960	15.8133
1965	15.15438
1970	14.4888
1975	14.09339
1980	13.84698
1985	13.53434
1990	12.96158
1995	13.09269
2000	13.40443
2005	14.00255
2010	14.87025
2015	15.28697
2020	16.41719
2025	18.51138
2030	20.603
2035	22.61968
2040	24.02436
2045	24.4305
2050	24.80902
2055	25.13059
2060	25.42552
2065	25.71759
2070	25.85699
2075	25.979
2080	26.00534
2085	26.00989
2090	25.97288
2095	25.89796
2100	25.77309