Year	Percent
1950	10.40085
1955	9.98768
1960	9.61685
1965	9.64636
1970	11.30339
1975	11.19481
1980	10.92689
1985	10.8128
1990	9.99319
1995	7.73349
2000	13.37036
2005	12.04309
2010	11.68641
2015	10.09968
2020	8.73465
2025	9.07168
2030	9.12211
2035	8.80847
2040	8.13042
2045	7.58203
2050	7.30496
2055	7.14316
2060	6.90875
2065	6.58053
2070	6.27037
2075	6.04767
2080	5.9001
2085	5.78506
2090	5.64616
2095	5.49875
2100	5.36997