Year	Percent
1950	14.74117
1955	15.60076
1960	14.98442
1965	14.905
1970	14.64717
1975	13.55838
1980	12.45145
1985	11.7814
1990	11.03305
1995	11.21682
2000	11.14677
2005	10.95633
2010	11.18658
2015	11.02273
2020	11.4169
2025	12.02427
2030	12.5948
2035	13.50181
2040	14.52467
2045	15.78668
2050	17.274
2055	18.84894
2060	20.27055
2065	21.51254
2070	22.58897
2075	23.49299
2080	24.27876
2085	24.91281
2090	25.37102
2095	25.67302
2100	25.86937