Year	Percent
1950	10.68161
1955	11.37053
1960	10.84277
1965	11.57696
1970	11.4205
1975	11.35827
1980	11.65362
1985	12.07816
1990	12.61075
1995	12.64139
2000	12.41289
2005	12.36386
2010	12.34592
2015	12.93996
2020	13.42111
2025	13.11108
2030	12.67236
2035	12.36689
2040	12.11514
2045	11.78246
2050	11.34661
2055	10.83081
2060	10.30856
2065	9.83276
2070	9.37878
2075	8.97084
2080	8.56964
2085	8.17643
2090	7.81927
2095	7.47323
2100	7.16551