Year	Percent
1950	27.13615
1955	29.12961
1960	31.77027
1965	28.7018
1970	24.68903
1975	25.25589
1980	27.24994
1985	30.79296
1990	31.41025
1995	31.12007
2000	31.25141
2005	32.60018
2010	33.3343
2015	33.64441
2020	32.75468
2025	30.50593
2030	28.72562
2035	29.73617
2040	31.08903
2045	32.27801
2050	31.6172
2055	29.49279
2060	28.38083
2065	28.1756
2070	28.30836
2075	28.07084
2080	27.27078
2085	26.21749
2090	25.31253
2095	24.76322
2100	24.48378