Year	Percent
1950	26.99692
1955	24.75068
1960	22.30534
1965	24.93972
1970	25.1904
1975	28.69023
1980	28.15151
1985	28.78887
1990	29.23932
1995	28.98842
2000	29.11105
2005	29.31967
2010	29.44245
2015	29.84505
2020	29.82708
2025	29.37757
2030	28.3575
2035	26.44031
2040	24.39661
2045	22.71395
2050	21.46955
2055	20.92328
2060	20.452
2065	19.99715
2070	19.54132
2075	19.23168
2080	19.14683
2085	19.24365
2090	19.40581
2095	19.50949
2100	19.51503