Year	Percent
1950	33.37191
1955	28.42071
1960	27.01273
1965	24.81342
1970	26.26576
1975	28.29319
1980	29.07711
1985	29.93205
1990	29.40367
1995	28.87085
2000	28.91565
2005	29.18724
2010	29.06446
2015	27.78579
2020	26.90628
2025	26.55836
2030	26.87363
2035	27.79886
2040	27.99198
2045	27.75535
2050	27.141
2055	26.25409
2060	25.86427
2065	25.77287
2070	25.67596
2075	25.35303
2080	24.76973
2085	24.06257
2090	23.43575
2095	22.96849
2100	22.63817