Year	Percent
1950	24.88592
1955	25.5522
1960	25.46805
1965	25.08409
1970	23.83488
1975	22.46298
1980	22.00009
1985	22.9396
1990	24.99701
1995	26.26691
2000	27.14961
2005	27.61534
2010	27.057
2015	27.11586
2020	26.51225
2025	24.67701
2030	23.25905
2035	23.51926
2040	23.91957
2045	24.72399
2050	24.99436
2055	23.88105
2060	23.18116
2065	23.03587
2070	22.96737
2075	23.34579
2080	23.40735
2085	23.07569
2090	22.62059
2095	22.32437
2100	22.25036