Year	Percent
1950	10.84094
1955	11.61694
1960	12.16254
1965	12.4769
1970	12.69161
1975	12.56647
1980	12.7676
1985	12.83681
1990	13.26553
1995	14.50569
2000	15.60311
2005	16.73202
2010	17.21904
2015	17.31527
2020	18.1182
2025	19.76616
2030	21.81401
2035	23.97558
2040	25.53611
2045	25.8131
2050	25.70446
2055	25.42483
2060	25.23829
2065	25.50695
2070	25.66557
2075	25.73053
2080	25.57144
2085	25.3341
2090	25.13619
2095	24.98991
2100	24.82586