Year	Percent
1950	7.06113
1955	6.34312
1960	5.80857
1965	7.21885
1970	7.16702
1975	7.57924
1980	7.79024
1985	7.01324
1990	6.33977
1995	5.71676
2000	5.65893
2005	5.70495
2010	5.76034
2015	5.37519
2020	5.31633
2025	5.56679
2030	5.53045
2035	5.53932
2040	5.42339
2045	5.27939
2050	5.20185
2055	5.24495
2060	5.32385
2065	5.35661
2070	5.32981
2075	5.25643
2080	5.1898
2085	5.1586
2090	5.15789
2095	5.14881
2100	5.11793