Year	Percent
1950	9.60405
1955	9.4826
1960	10.09914
1965	9.69583
1970	10.42569
1975	10.18977
1980	10.10443
1985	10.32568
1990	10.79704
1995	11.07606
2000	11.03444
2005	10.64086
2010	10.4668
2015	10.53975
2020	11.10806
2025	11.59237
2030	11.37899
2035	11.06292
2040	10.89933
2045	10.79037
2050	10.6056
2055	10.31411
2060	9.9457
2065	9.55733
2070	9.20346
2075	8.86439
2080	8.55968
2085	8.25334
2090	7.94584
2095	7.66077
2100	7.38003