Year	Percent
1950	14.07458
1955	15.5545
1960	17.20963
1965	18.91393
1970	20.32304
1975	21.35479
1980	19.98622
1985	20.23721
1990	24.76399
1995	24.64651
2000	26.61306
2005	27.69538
2010	28.57715
2015	29.73496
2020	31.3666
2025	34.02925
2030	36.5006
2035	37.21123
2040	37.57294
2045	38.32466
2050	39.24455
2055	39.46473
2060	39.32544
2065	38.98149
2070	38.71585
2075	38.72088
2080	38.90641
2085	39.18116
2090	39.44907
2095	39.6902
2100	39.9432