Year	Percent
1950	10.36938
1955	10.50234
1960	10.59816
1965	10.76733
1970	9.70374
1975	10.11862
1980	10.60284
1985	10.90416
1990	10.9114
1995	10.83186
2000	10.84689
2005	10.79512
2010	10.65055
2015	10.43717
2020	10.07208
2025	10.23781
2030	10.40943
2035	9.96708
2040	9.51052
2045	9.17299
2050	8.96941
2055	8.81411
2060	8.66657
2065	8.44865
2070	8.16925
2075	7.91043
2080	7.70565
2085	7.52499
2090	7.34328
2095	7.14621
2100	6.9433