Year	Percent
1950	10.40145
1955	11.04504
1960	11.66985
1965	12.23301
1970	12.71608
1975	13.08154
1980	13.36878
1985	14.07357
1990	17.19036
1995	17.71377
2000	18.22756
2005	19.26878
2010	21.96802
2015	24.11318
2020	26.52834
2025	29.13662
2030	31.45852
2035	32.74964
2040	33.03125
2045	33.25758
2050	33.72733
2055	34.20515
2060	34.49919
2065	35.00015
2070	35.30273
2075	35.51734
2080	35.85121
2085	36.25851
2090	36.67314
2095	37.06147
2100	37.39216