Year	Percent
1950	27.6129
1955	27.89248
1960	27.83638
1965	27.59726
1970	27.53162
1975	26.74022
1980	26.60306
1985	27.03161
1990	27.68764
1995	28.77776
2000	29.41415
2005	29.91825
2010	30.3956
2015	30.6351
2020	30.71519
2025	30.59848
2030	30.86654
2035	31.39589
2040	31.59262
2045	31.57618
2050	31.1962
2055	30.609
2060	30.23937
2065	30.06461
2070	29.90986
2075	29.62564
2080	29.21962
2085	28.75153
2090	28.30694
2095	27.9156
2100	27.5344