Year	Percent
1950	11.68475
1955	12.26837
1960	12.68806
1965	12.89646
1970	13.07535
1975	12.87853
1980	12.9575
1985	12.89707
1990	13.18939
1995	14.35794
2000	15.41232
2005	16.60528
2010	17.15454
2015	17.28877
2020	18.09274
2025	19.73954
2030	21.77703
2035	23.93456
2040	25.49652
2045	25.75173
2050	25.60308
2055	25.27553
2060	25.03883
2065	25.24964
2070	25.34979
2075	25.43739
2080	25.29774
2085	25.02155
2090	24.73592
2095	24.48269
2100	24.2316