Year	Percent
1950	10.04516
1955	9.84194
1960	9.8239
1965	10.22797
1970	10.7437
1975	11.663
1980	12.00956
1985	12.47514
1990	14.56125
1995	14.89703
2000	14.81627
2005	15.1464
2010	15.50913
2015	16.15999
2020	17.14322
2025	18.24459
2030	19.16296
2035	20.61675
2040	22.25088
2045	23.42286
2050	24.96618
2055	26.85807
2060	28.51822
2065	29.87063
2070	31.02241
2075	32.00263
2080	32.88334
2085	33.66418
2090	34.3389
2095	34.91377
2100	35.41184