Year	Percent
1950	26.87378
1955	28.02056
1960	28.63141
1965	28.93374
1970	28.87819
1975	27.881
1980	27.37201
1985	26.97915
1990	26.45499
1995	23.2124
2000	24.69757
2005	29.02537
2010	30.98331
2015	31.18345
2020	30.76923
2025	30.71053
2030	31.23547
2035	32.03039
2040	32.48916
2045	31.91572
2050	30.90414
2055	30.26199
2060	29.90102
2065	29.6035
2070	29.15257
2075	28.50062
2080	27.7728
2085	27.11172
2090	26.56289
2095	26.0429
2100	25.48247