Year	Percent
1950	8.41651
1955	9.38577
1960	10.4942
1965	12.08058
1970	13.97072
1975	16.16968
1980	15.99798
1985	16.28609
1990	20.83804
1995	21.13226
2000	22.59406
2005	21.20664
2010	21.94402
2015	24.24965
2020	26.65994
2025	28.78794
2030	29.18747
2035	30.25775
2040	31.46377
2045	33.02207
2050	34.88838
2055	34.59717
2060	32.9207
2065	31.76145
2070	31.2612
2075	31.75052
2080	32.16149
2085	32.42987
2090	32.46424
2095	32.46099
2100	32.69664