Year	Percent
1950	13.44813
1955	13.76672
1960	12.89913
1965	12.42045
1970	11.82718
1975	12.43557
1980	15.76472
1985	18.91164
1990	20.84455
1995	19.91833
2000	21.40484
2005	22.00845
2010	25.6572
2015	30.11622
2020	28.89055
2025	29.03091
2030	27.317
2035	26.41319
2040	27.67927
2045	27.99126
2050	27.62462
2055	26.77045
2060	26.22931
2065	26.02667
2070	26.22582
2075	26.20247
2080	25.73682
2085	25.06241
2090	24.53913
2095	24.32927
2100	24.32581