Year	Percent
1950	8.68034
1955	10.01498
1960	10.3277
1965	10.44139
1970	9.6648
1975	8.12035
1980	7.34077
1985	7.00321
1990	7.14565
1995	7.37035
2000	7.40016
2005	6.70261
2010	6.68404
2015	6.53388
2020	6.02102
2025	6.08276
2030	6.12508
2035	6.05013
2040	5.92353
2045	5.80404
2050	5.71973
2055	5.69286
2060	5.7069
2065	5.68878
2070	5.61983
2075	5.53582
2080	5.46748
2085	5.43659
2090	5.42088
2095	5.40098
2100	5.36253