Year	Percent
1950	14.27518
1955	13.88753
1960	13.57272
1965	13.27519
1970	13.04312
1975	12.97951
1980	13.6775
1985	13.1556
1990	12.83513
1995	13.73324
2000	14.93141
2005	17.01706
2010	18.53792
2015	18.83736
2020	17.57206
2025	21.47581
2030	22.53224
2035	24.61521
2040	27.02854
2045	24.67398
2050	25.00718
2055	24.86522
2060	25.23143
2065	25.73507
2070	25.64287
2075	25.22524
2080	24.85959
2085	24.75087
2090	24.6664
2095	24.42565
2100	24.0197