Year	Percent
1950	13.82155
1955	12.56955
1960	12.07478
1965	11.75387
1970	11.92934
1975	12.2015
1980	12.01417
1985	11.56104
1990	10.95933
1995	11.55511
2000	11.83736
2005	13.04938
2010	14.85842
2015	16.66326
2020	18.32654
2025	19.96467
2030	20.91038
2035	21.40858
2040	21.90097
2045	22.22269
2050	22.97462
2055	24.0439
2060	24.81444
2065	25.32917
2070	25.42878
2075	25.22943
2080	25.19239
2085	25.22628
2090	25.20842
2095	25.00951
2100	24.64518