Year	Percent
1950	26.74979
1955	27.24891
1960	26.52859
1965	25.77188
1970	24.28157
1975	22.93336
1980	22.55325
1985	21.99927
1990	23.091
1995	23.82788
2000	24.99031
2005	26.55607
2010	26.64333
2015	26.72343
2020	26.21056
2025	25.42771
2030	24.88426
2035	24.73554
2040	24.36394
2045	23.41468
2050	22.91339
2055	22.87305
2060	23.21257
2065	23.69487
2070	23.48625
2075	23.0388
2080	22.66144
2085	22.48376
2090	22.49918
2095	22.52883
2100	22.39598