Year	Percent
1950	12.64919
1955	13.33029
1960	14.17272
1965	15.10089
1970	16.08155
1975	17.11547
1980	17.55829
1985	18.05113
1990	20.23303
1995	19.49272
2000	19.78511
2005	21.35731
2010	23.03902
2015	23.60254
2020	24.52566
2025	25.70105
2030	27.13889
2035	28.01302
2040	28.2812
2045	28.62852
2050	29.49036
2055	30.7047
2060	30.50021
2065	30.46279
2070	30.92399
2075	31.3899
2080	31.97776
2085	32.54544
2090	32.99555
2095	33.42017
2100	33.91813