Year	Percent
1950	6.84938
1955	6.88109
1960	7.54176
1965	9.08919
1970	9.02888
1975	9.43945
1980	9.59279
1985	9.0123
1990	8.43805
1995	7.17189
2000	6.89432
2005	7.13081
2010	7.02555
2015	6.56835
2020	6.05469
2025	6.237
2030	5.9993
2035	5.88129
2040	5.78331
2045	5.64438
2050	5.48818
2055	5.39156
2060	5.34825
2065	5.29867
2070	5.23677
2075	5.15234
2080	5.06694
2085	5.00161
2090	4.95721
2095	4.9166
2100	4.87638