Year	Percent
1950	9.71759
1955	9.29752
1960	13.46348
1965	15.10125
1970	15.64122
1975	14.58379
1980	14.04108
1985	13.62809
1990	14.42707
1995	15.50523
2000	14.23288
2005	12.85907
2010	11.06831
2015	11.64073
2020	12.193
2025	11.5486
2030	10.54913
2035	9.65769
2040	9.2628
2045	9.18061
2050	8.99632
2055	8.5155
2060	7.92887
2065	7.46313
2070	7.1958
2075	7.00496
2080	6.77113
2085	6.44561
2090	6.12718
2095	5.87491
2100	5.71074