Year	Percent
1950	7.14745
1955	6.24691
1960	5.6778
1965	8.17556
1970	7.81327
1975	7.65592
1980	7.65204
1985	7.39919
1990	7.10703
1995	6.149
2000	6.29075
2005	6.06851
2010	5.69496
2015	5.66288
2020	5.77329
2025	5.77248
2030	5.55673
2035	5.37346
2040	5.27919
2045	5.28272
2050	5.3511
2055	5.38333
2060	5.3426
2065	5.26427
2070	5.20259
2075	5.17976
2080	5.1798
2085	5.1659
2090	5.12405
2095	5.06223
2100	5.00391