Year	Percent
1950	7.96993
1955	6.79129
1960	6.30452
1965	9.04535
1970	8.48583
1975	8.25806
1980	8.25519
1985	7.99892
1990	7.69329
1995	6.70584
2000	6.84104
2005	6.59084
2010	6.18446
2015	6.13895
2020	6.24003
2025	6.23177
2030	6.00204
2035	5.81403
2040	5.71711
2045	5.718
2050	5.78118
2055	5.80414
2060	5.74802
2065	5.65248
2070	5.57698
2075	5.54685
2080	5.54399
2085	5.52731
2090	5.48273
2095	5.41784
2100	5.35588