Year	Percent
1950	25.97553
1955	26.44517
1960	26.71891
1965	27.26857
1970	27.24643
1975	26.69982
1980	26.19839
1985	25.78986
1990	25.86576
1995	26.68442
2000	27.09156
2005	27.549
2010	27.80001
2015	28.18637
2020	28.75707
2025	29.30389
2030	29.86184
2035	30.30533
2040	30.5922
2045	30.79259
2050	30.85614
2055	30.82461
2060	30.75642
2065	30.61241
2070	30.40189
2075	30.14545
2080	29.85335
2085	29.55807
2090	29.25085
2095	28.93405
2100	28.59547