Year	Percent
1950	11.25695
1955	11.16379
1960	12.15863
1965	12.55341
1970	13.07268
1975	13.6079
1980	13.83877
1985	13.89125
1990	14.58947
1995	15.81087
2000	17.41582
2005	21.48412
2010	21.50268
2015	21.7513
2020	22.00783
2025	22.67585
2030	23.29065
2035	24.07888
2040	24.0103
2045	23.82916
2050	24.75268
2055	25.52444
2060	26.26366
2065	26.5229
2070	26.08856
2075	25.73571
2080	25.62714
2085	25.62105
2090	25.52916
2095	25.26576
2100	24.91475