Year	Percent
1950	28.7144
1955	28.75653
1960	27.15031
1965	26.2615
1970	25.52296
1975	25.41008
1980	25.97371
1985	26.15727
1990	26.28175
1995	25.95584
2000	25.92541
2005	26.24715
2010	26.72467
2015	27.35637
2020	27.97988
2025	28.77473
2030	29.58667
2035	30.24355
2040	30.82003
2045	31.21429
2050	31.48218
2055	31.61811
2060	31.56824
2065	31.36138
2070	31.01946
2075	30.59737
2080	30.13209
2085	29.62722
2090	29.09495
2095	28.53925
2100	27.97543