Year	Percent
1950	14.07887
1955	13.93766
1960	13.70017
1965	14.50324
1970	14.64925
1975	14.58976
1980	14.5515
1985	14.43974
1990	14.41913
1995	14.34466
2000	13.9696
2005	13.71049
2010	13.43725
2015	13.18135
2020	13.056
2025	12.58014
2030	12.08307
2035	11.61256
2040	11.20372
2045	10.84499
2050	10.49341
2055	10.13271
2060	9.77012
2065	9.42524
2070	9.10691
2075	8.8059
2080	8.51812
2085	8.25162
2090	7.99868
2095	7.7265
2100	7.48444