Year	Percent
1950	15.01396
1955	14.20224
1960	13.63121
1965	13.20902
1970	12.81687
1975	12.64667
1980	10.70031
1985	10.39876
1990	10.68942
1995	12.49818
2000	14.06425
2005	15.43906
2010	14.97514
2015	12.7578
2020	11.94559
2025	13.6078
2030	17.08766
2035	21.4359
2040	25.06263
2045	26.33258
2050	25.89654
2055	24.84423
2060	24.11958
2065	24.3505
2070	25.49406
2075	26.61817
2080	26.79974
2085	26.20395
2090	25.46466
2095	25.27195
2100	25.75346