Year	Percent
1950	27.17885
1955	27.23801
1960	26.7726
1965	26.2495
1970	26.05793
1975	26.43835
1980	26.61731
1985	26.99307
1990	28.02989
1995	28.935
2000	29.20752
2005	29.07856
2010	29.45533
2015	30.89204
2020	32.27232
2025	32.45974
2030	31.75708
2035	29.94376
2040	28.16794
2045	27.32164
2050	26.52208
2055	25.50339
2060	24.1342
2065	22.81498
2070	21.79602
2075	21.10884
2080	20.65383
2085	20.27991
2090	19.90886
2095	19.56377
2100	19.30891