Year	Percent
1950	26.91022
1955	26.79343
1960	26.79659
1965	27.3036
1970	27.21699
1975	27.9471
1980	28.27871
1985	28.03832
1990	28.12196
1995	28.30477
2000	29.11059
2005	30.05701
2010	30.84928
2015	31.5343
2020	31.93415
2025	31.9934
2030	31.77465
2035	31.20656
2040	30.53476
2045	29.90723
2050	29.36362
2055	28.89184
2060	28.27767
2065	27.59282
2070	26.89857
2075	26.23584
2080	25.61313
2085	25.02002
2090	24.44967
2095	23.9104
2100	23.41686