Year	Percent
1950	10.87256
1955	10.81756
1960	10.05181
1965	10.15658
1970	10.16412
1975	11.61608
1980	12.65358
1985	14.00291
1990	11.44041
1995	10.97744
2000	12.28802
2005	10.16952
2010	10.89295
2015	11.27798
2020	11.74476
2025	11.40372
2030	10.28598
2035	9.33837
2040	9.14862
2045	9.30726
2050	9.40266
2055	9.19886
2060	8.6332
2065	7.99931
2070	7.61276
2075	7.53732
2080	7.52565
2085	7.37471
2090	7.03519
2095	6.63596
2100	6.32171