Year	Percent
1950	16.45019
1955	15.18161
1960	12.23587
1965	11.18612
1970	14.19901
1975	16.53599
1980	20.2994
1985	19.24566
1990	17.63016
1995	18.81899
2000	20.38289
2005	24.48932
2010	25.15483
2015	24.2173
2020	22.84198
2025	23.63991
2030	27.11796
2035	29.48164
2040	29.56891
2045	28.02045
2050	26.46113
2055	26.48551
2060	27.31028
2065	27.59957
2070	26.09955
2075	23.91933
2080	22.6511
2085	22.48365
2090	22.89188
2095	23.18214
2100	22.90983