Year	Percent
1950	27.0623
1955	27.17876
1960	26.61376
1965	26.72179
1970	27.15575
1975	26.67643
1980	26.44085
1985	26.2388
1990	27.42437
1995	26.86246
2000	27.12993
2005	27.56409
2010	28.57661
2015	29.65603
2020	30.39416
2025	31.04491
2030	31.69227
2035	31.79986
2040	31.91667
2045	31.96194
2050	31.67901
2055	31.54034
2060	31.23058
2065	30.82028
2070	30.3608
2075	29.91944
2080	29.48294
2085	29.03363
2090	28.56462
2095	28.05759
2100	27.52092