Year	Percent
1950	13.02584
1955	13.99674
1960	14.60178
1965	11.99969
1970	14.79773
1975	14.38025
1980	13.56056
1985	14.70544
1990	14.75876
1995	17.91953
2000	20.76915
2005	21.9958
2010	24.47003
2015	25.51269
2020	23.90585
2025	29.24478
2030	31.33535
2035	30.82222
2040	30.06945
2045	30.19862
2050	33.36505
2055	36.44383
2060	36.65052
2065	34.77493
2070	32.08903
2075	29.03945
2080	26.58116
2085	25.42348
2090	25.05088
2095	24.77712
2100	24.8287