Year	Percent
1950	27.02715
1955	28.73535
1960	27.10351
1965	24.78165
1970	24.54983
1975	24.49888
1980	25.69567
1985	26.47168
1990	26.34904
1995	26.60402
2000	27.4444
2005	29.35358
2010	30.16921
2015	30.63729
2020	29.56509
2025	28.36432
2030	26.86078
2035	26.29933
2040	26.17697
2045	25.58543
2050	25.00219
2055	24.61361
2060	24.44055
2065	24.46941
2070	24.63149
2075	24.61129
2080	24.33954
2085	24.01949
2090	23.76711
2095	23.59987
2100	23.48866