Year	Percent
1950	10.89125
1955	11.13339
1960	12.06034
1965	13.2693
1970	15.14661
1975	16.65621
1980	17.34168
1985	17.992
1990	22.1742
1995	22.41045
2000	23.10634
2005	24.29243
2010	27.34005
2015	29.50453
2020	31.01977
2025	32.41048
2030	33.21699
2035	33.09808
2040	33.24568
2045	33.48959
2050	33.62296
2055	34.2161
2060	34.3566
2065	34.51802
2070	35.04091
2075	35.48957
2080	35.97744
2085	36.45977
2090	36.88777
2095	37.30218
2100	37.78863