Year	Percent
1950	14.98647
1955	14.78545
1960	14.24646
1965	14.09557
1970	14.34384
1975	14.48186
1980	14.96441
1985	15.20704
1990	15.97797
1995	17.51127
2000	19.16555
2005	21.38976
2010	23.20392
2015	24.43977
2020	25.74967
2025	26.96308
2030	27.76712
2035	28.2322
2040	28.23741
2045	27.41931
2050	26.40741
2055	25.58117
2060	24.6002
2065	23.85854
2070	23.4133
2075	22.90474
2080	22.4549
2085	22.12227
2090	21.91389
2095	21.77005
2100	21.66019