Year	Percent
1950	7.00727
1955	7.4763
1960	8.63769
1965	7.34081
1970	7.7539
1975	8.83155
1980	8.58575
1985	7.189
1990	6.26987
1995	6.58383
2000	6.8772
2005	6.65831
2010	6.05731
2015	5.60472
2020	6.06284
2025	6.10437
2030	5.99881
2035	5.81361
2040	5.54244
2045	5.39426
2050	5.42937
2055	5.51705
2060	5.52734
2065	5.44771
2070	5.32825
2075	5.23892
2080	5.21622
2085	5.22644
2090	5.21841
2095	5.1686
2100	5.09133