Year	Percent
1950	11.38622
1955	11.79435
1960	12.52379
1965	11.61601
1970	11.44035
1975	11.91674
1980	12.54806
1985	12.32136
1990	13.07182
1995	13.33425
2000	14.0942
2005	14.31692
2010	12.79016
2015	12.06287
2020	11.76731
2025	11.59597
2030	11.01067
2035	10.30496
2040	9.62431
2045	9.03399
2050	8.49679
2055	8.00143
2060	7.53
2065	7.04751
2070	6.60943
2075	6.24489
2080	5.94554
2085	5.70908
2090	5.52304
2095	5.37094
2100	5.24698