Year	Percent
1950	26.07291
1955	26.99901
1960	27.24232
1965	27.00142
1970	25.2766
1975	23.54909
1980	22.59503
1985	23.21209
1990	24.92326
1995	25.90249
2000	26.95856
2005	26.89844
2010	26.08063
2015	25.95012
2020	25.29203
2025	24.64394
2030	24.35403
2035	24.96381
2040	24.50156
2045	24.03669
2050	23.4268
2055	22.45184
2060	23.11466
2065	23.65061
2070	23.55313
2075	23.2549
2080	22.81503
2085	22.49568
2090	22.43944
2095	22.52446
2100	22.50457