Year	Percent
1950	14.33159
1955	14.3849
1960	14.36782
1965	14.84105
1970	15.41093
1975	15.32761
1980	15.62534
1985	15.556
1990	15.30872
1995	15.19005
2000	15.03282
2005	15.47066
2010	15.6482
2015	14.99343
2020	14.44274
2025	14.12487
2030	13.79312
2035	13.38568
2040	12.90849
2045	12.42289
2050	11.98997
2055	11.58867
2060	11.213
2065	10.80131
2070	10.4109
2075	10.03827
2080	9.6924
2085	9.36542
2090	9.04016
2095	8.7215
2100	8.41366