Year	Percent
1950	11.88849
1955	12.36659
1960	13.2314
1965	13.38618
1970	13.59427
1975	13.7439
1980	13.52587
1985	13.7978
1990	13.86381
1995	13.80768
2000	13.62544
2005	13.32257
2010	12.94653
2015	11.6473
2020	11.05404
2025	11.41857
2030	11.18402
2035	10.56606
2040	9.87593
2045	9.3809
2050	8.998
2055	8.63837
2060	8.24725
2065	7.88065
2070	7.54325
2075	7.22962
2080	6.97825
2085	6.75554
2090	6.54474
2095	6.35781
2100	6.18839