Year	Percent
1950	11.77002
1955	11.91782
1960	12.7303
1965	13.2246
1970	13.45985
1975	13.47975
1980	13.77347
1985	13.98762
1990	13.87045
1995	14.54925
2000	15.27622
2005	14.50314
2010	13.04232
2015	11.95719
2020	11.85186
2025	11.69367
2030	11.37898
2035	10.68405
2040	9.9699
2045	9.42158
2050	9.0206
2055	8.6298
2060	8.2016
2065	7.76887
2070	7.387
2075	7.08465
2080	6.84454
2085	6.63071
2090	6.43128
2095	6.23593
2100	6.07545