Year	Percent
1950	26.76073
1955	27.99393
1960	28.74709
1965	29.21076
1970	29.25893
1975	28.23414
1980	27.66019
1985	27.18732
1990	26.53404
1995	23.16229
2000	24.44975
2005	28.66221
2010	30.57657
2015	30.90132
2020	30.72894
2025	30.87216
2030	31.60067
2035	32.54658
2040	33.06784
2045	32.58081
2050	31.66019
2055	31.13375
2060	30.89261
2065	30.6717
2070	30.25893
2075	29.6196
2080	28.88692
2085	28.21392
2090	27.64377
2095	27.08775
2100	26.47483