Year	Percent
1950	10.01401
1955	10.70124
1960	10.80549
1965	12.02185
1970	11.39308
1975	11.11938
1980	11.14485
1985	11.72151
1990	12.33908
1995	13.07828
2000	13.09582
2005	12.91592
2010	12.19349
2015	11.79898
2020	11.98259
2025	12.0336
2030	11.64119
2035	11.11646
2040	10.60789
2045	10.25509
2050	9.99254
2055	9.71516
2060	9.3997
2065	9.03921
2070	8.70248
2075	8.42369
2080	8.16693
2085	7.92627
2090	7.65774
2095	7.38675
2100	7.12681