Year	Percent
1950	24.82568
1955	25.54066
1960	26.31987
1965	25.9288
1970	25.46581
1975	25.06299
1980	24.60046
1985	25.5086
1990	26.34908
1995	26.62129
2000	27.32637
2005	27.88071
2010	28.90323
2015	30.62619
2020	31.5621
2025	31.66739
2030	31.51053
2035	31.04727
2040	30.88753
2045	30.99895
2050	30.7751
2055	30.20208
2060	29.49081
2065	28.85127
2070	28.33628
2075	27.87156
2080	27.35915
2085	26.77304
2090	26.13788
2095	25.51717
2100	24.94545