Year	Percent
1950	14.41134
1955	15.00871
1960	13.72603
1965	14.30745
1970	14.87352
1975	15.15005
1980	15.01257
1985	14.71637
1990	14.45843
1995	14.16903
2000	13.74083
2005	13.51562
2010	12.91891
2015	12.86337
2020	12.85296
2025	12.13199
2030	11.4315
2035	10.89215
2040	10.51332
2045	10.18491
2050	9.8738
2055	9.50453
2060	9.08889
2065	8.71103
2070	8.39958
2075	8.11898
2080	7.84187
2085	7.55816
2090	7.28212
2095	7.01206
2100	6.77798