Year	Percent
1950	27.41357
1955	27.67015
1960	27.91795
1965	27.93668
1970	27.88932
1975	27.34172
1980	27.2677
1985	26.34638
1990	25.96922
1995	26.06611
2000	25.89215
2005	26.68415
2010	27.37793
2015	29.04155
2020	31.1357
2025	32.51564
2030	33.2748
2035	33.39666
2040	32.936
2045	32.33713
2050	31.79977
2055	31.04818
2060	30.12428
2065	29.14609
2070	28.19959
2075	27.2944
2080	26.44667
2085	25.63509
2090	24.87295
2095	24.18009
2100	23.5643