Year	Percent
1950	28.14213
1955	27.34486
1960	26.98435
1965	25.3657
1970	24.63205
1975	26.45923
1980	26.30537
1985	27.8278
1990	28.10265
1995	31.44141
2000	33.11041
2005	31.13341
2010	31.15233
2015	32.63894
2020	33.36443
2025	31.8882
2030	28.19956
2035	24.83942
2040	22.65574
2045	22.22323
2050	23.18921
2055	23.23382
2060	22.60373
2065	21.20171
2070	19.93733
2075	19.58941
2080	20.06732
2085	20.6711
2090	20.79708
2095	20.36021
2100	19.74223