Year	Percent
1950	12.10352
1955	13.72828
1960	12.2287
1965	11.29234
1970	11.93769
1975	12.91583
1980	15.98108
1985	16.51437
1990	17.33079
1995	18.7166
2000	23.59367
2005	21.42609
2010	23.47486
2015	31.34623
2020	31.63846
2025	30.95874
2030	28.72185
2035	27.18931
2040	27.02171
2045	26.94224
2050	27.61276
2055	28.03597
2060	27.98794
2065	28.01405
2070	27.75345
2075	27.25222
2080	26.68244
2085	26.5117
2090	26.52273
2095	26.43455
2100	26.15518