Year	Percent
1950	10.20952
1955	10.08466
1960	9.83022
1965	9.89457
1970	10.7156
1975	10.64383
1980	10.5487
1985	10.55066
1990	10.78947
1995	10.94468
2000	10.72488
2005	10.15184
2010	10.05156
2015	10.39842
2020	10.27797
2025	10.00999
2030	9.5838
2035	9.30532
2040	9.09565
2045	8.89492
2050	8.68949
2055	8.45949
2060	8.2308
2065	8.00437
2070	7.81293
2075	7.63314
2080	7.4547
2085	7.27866
2090	7.092
2095	6.91532
2100	6.74405