Year	Percent
1971	1.00852
1972	1.0131
1973	1.01303
1974	1.0123
1975	1.01194
1976	1.01118
1977	1.00968
1978	1.00909
1979	1.00863
1980	1.00909
1981	1.01027
1982	1.011
1983	1.01174
1984	1.0118
1985	1.00959
1986	1.01048
1987	1.01076
1988	1.01196
1989	1.01334
1990	1.01501
1991	1.01103
1992	1.01159
1993	1.01454
1994	1.0111
1995	1.01074
1998	1.01108
1999	1.01085
2000	1.01036
2001	1.00992
2002	1.00875
2003	1.00736
2004	1.00597
2005	1.00553
2006	1.00571
2007	1.00565
2008	1.00516
2009	1.0056
2010	1.00511
2011	1.00559
2012	1.00563
2013	1.00567
2014	1.00547
2015	1.00463