Year	Percent
1950	14.77837
1955	15.33228
1960	15.63553
1965	15.98878
1970	16.67864
1975	17.3824
1980	17.4292
1985	15.57744
1990	13.23051
1995	11.46919
2000	11.8867
2005	13.61803
2010	15.99519
2015	18.28872
2020	20.1038
2025	25.3606
2030	32.9236
2035	37.93626
2040	38.62587
2045	34.36362
2050	27.98182
2055	24.36411
2060	23.88297
2065	24.49523
2070	24.4681
2075	23.31653
2080	22.3636
2085	22.30547
2090	22.97189
2095	23.57943
2100	23.53171