Year	Percent
1970	1.02754
1975	1.12071
1976	1.0329
1977	1.05458
1978	1.02918
1979	1.04176
1980	1.01859
1994	1.11224
1995	1.07158
1996	1.05408
1997	1.07369
1998	1.0916
1999	1.04999
2000	1.06879
2001	1.06637
2002	1.05641
2003	1.06073
2004	1.06045
2005	1.05827
2006	1.06592
2007	1.0711
2009	1.05151
2010	1.05483
2011	1.06424
2012	1.04965
2014	1.05753
2015	1.04825
2016	1.05141