Year	Percent
1950	11.55456
1955	15.92771
1960	17.88225
1965	18.22971
1970	16.97361
1975	16.28665
1980	15.79045
1985	16.86232
1990	17.36185
1995	15.6868
2000	14.07712
2005	12.27104
2010	12.88118
2015	13.33691
2020	12.41653
2025	11.17269
2030	10.1385
2035	9.67237
2040	9.52408
2045	9.24562
2050	8.66871
2055	8.01116
2060	7.50138
2065	7.20086
2070	6.97799
2075	6.7128
2080	6.36514
2085	6.034
2090	5.77377
2095	5.59955
2100	5.46431