Year	Percent
1950	9.61174
1955	8.37144
1960	8.16902
1965	8.40586
1970	8.27448
1975	8.27312
1980	7.64749
1985	7.39144
1990	9.56448
1995	9.89088
2000	10.39579
2005	9.57846
2010	9.21789
2015	10.51632
2020	13.18797
2025	16.72237
2030	19.39267
2035	21.27122
2040	22.83549
2045	25.18273
2050	28.19106
2055	30.37636
2060	30.8161
2065	30.40011
2070	30.38437
2075	31.71935
2080	32.70329
2085	33.06519
2090	33.23782
2095	33.65629
2100	34.28277