Year	Percent
1950	10.14158
1955	10.11838
1960	10.08484
1965	10.19732
1970	10.26498
1975	10.27882
1980	10.44555
1985	10.74781
1990	11.02992
1995	10.97507
2000	10.78462
2005	10.47433
2010	10.79335
2015	11.08245
2020	11.1162
2025	10.84496
2030	10.44242
2035	10.12511
2040	9.92346
2045	9.78778
2050	9.61192
2055	9.35854
2060	9.06916
2065	8.80386
2070	8.5867
2075	8.41224
2080	8.25824
2085	8.07807
2090	7.87384
2095	7.66904
2100	7.48489