Year	Percent
1950	27.36825
1955	27.79849
1960	28.03363
1965	28.16713
1970	28.09036
1975	27.59512
1980	27.19629
1985	26.88704
1990	26.72613
1995	26.73228
2000	26.80342
2005	26.77314
2010	26.62572
2015	26.56159
2020	26.72086
2025	27.31019
2030	28.298
2035	29.44021
2040	30.43777
2045	31.14562
2050	31.57983
2055	31.80049
2060	31.91188
2065	31.83856
2070	31.55112
2075	31.08761
2080	30.50099
2085	29.89606
2090	29.26688
2095	28.61279
2100	27.94296