Year	Percent
1950	11.4408
1955	11.24424
1960	11.21779
1965	11.47632
1970	11.96769
1975	12.56424
1980	13.05665
1985	13.13275
1990	13.49383
1995	14.34145
2000	15.74068
2005	17.47568
2010	18.99586
2015	20.14336
2020	20.97654
2025	21.81713
2030	22.60868
2035	23.39277
2040	23.89931
2045	24.33195
2050	24.72363
2055	24.97981
2060	25.21897
2065	25.14012
2070	24.86752
2075	24.47853
2080	24.07892
2085	23.68086
2090	23.28144
2095	22.89192
2100	22.53711