Year	Percent
1950	14.54388
1955	14.6567
1960	14.38748
1965	14.13156
1970	13.86943
1975	13.57773
1980	13.29666
1985	13.12653
1990	13.26751
1995	13.94177
2000	14.53629
2005	15.20863
2010	15.93474
2015	16.65471
2020	17.5487
2025	18.42244
2030	19.05042
2035	19.65389
2040	20.49501
2045	21.35701
2050	22.27008
2055	22.94018
2060	23.29369
2065	23.58272
2070	23.86524
2075	24.21298
2080	24.52619
2085	24.76737
2090	24.934
2095	25.05544
2100	25.15128