Year	Percent
1950	10.459
1955	11.01846
1960	6.71644
1965	7.34942
1970	9.56279
1975	10.30538
1980	10.38008
1985	8.75589
1990	8.23775
1995	7.87786
2000	8.48311
2005	9.58605
2010	8.29966
2015	6.61066
2020	6.01702
2025	7.04901
2030	7.77404
2035	7.20294
2040	6.563
2045	6.14546
2050	6.11159
2055	6.33158
2060	6.49882
2065	6.36878
2070	6.04297
2075	5.77411
2080	5.69453
2085	5.74809
2090	5.79428
2095	5.7313
2100	5.56992