Year	Percent
1950	18.4462
1955	17.72115
1960	17.30671
1965	16.94617
1970	16.54275
1975	16.43022
1980	15.85469
1985	15.22057
1990	14.51788
1995	14.4013
2000	13.68515
2005	13.02849
2010	13.15986
2015	13.09558
2020	12.54387
2025	12.13915
2030	13.47933
2035	16.19758
2040	18.94381
2045	20.72835
2050	21.71549
2055	22.05911
2060	22.25063
2065	22.72359
2070	23.1508
2075	23.621
2080	24.01545
2085	24.34229
2090	24.61047
2095	24.81954
2100	24.95903