Year	Percent
1970	0.99958
1971	1.0033
1972	1.00955
1973	1.01459
1974	1.00884
1975	1.01299
1976	1.01507
1977	1.01787
1979	1.0168
1980	1.0185
1981	1.00998
1982	1.01
1983	1.00484
1984	0.99554
1985	0.99705
1986	0.99214
1987	0.99047
1988	0.99053
1989	0.98831
1990	0.99469
1991	1.00054
1992	1.00122
1993	1.00668
1994	1.00745
1995	1.00986
1996	1.014
1997	1.013
1998	1.00927
1999	1.0059
2000	1.00055
2001	1.00844
2002	0.99927
2004	1.00097
2005	1.00062
2006	1.00517
2007	1.00236
2008	1.00674
2009	1.00807
2010	1.00734
2011	1.00837
2012	1.00998
2013	1.02127
2014	1.02203
2015	1.01673
2016	1.02933