Year	Percent
1950	16.52439
1955	15.54429
1960	14.60088
1965	13.47537
1970	12.58487
1975	11.02234
1980	12.02921
1985	10.98418
1990	10.5729
1995	11.73339
2000	11.86916
2005	12.95764
2010	16.66459
2015	17.9525
2020	18.75739
2025	19.68622
2030	21.11207
2035	22.91602
2040	24.88783
2045	26.26425
2050	26.65144
2055	26.59459
2060	26.56803
2065	26.67377
2070	27.01549
2075	27.13077
2080	26.883
2085	26.47741
2090	26.12218
2095	25.87038
2100	25.65498