Year	Ratio
1986-01-01	1.05806005001068
1987-01-01	1.02892994880676
1991-01-01	1.05125999450684
1994-01-01	1.01128995418549
1995-01-01	1.02700996398926
1999-01-01	1.07030999660492
2000-01-01	1.05387997627258
2001-01-01	1.05106997489929
2003-01-01	1.04234004020691
2004-01-01	1.06377995014191
2005-01-01	1.03170001506805
2006-01-01	1.04521000385284
2007-01-01	1.05579996109009
2008-01-01	1.06769001483917
2009-01-01	1.06733000278473
2010-01-01	1.07892000675201
2011-01-01	1.06471002101898
2012-01-01	1.02927994728088
2013-01-01	1.04165995121002
2014-01-01	1.04671001434326
2015-01-01	1.02483999729156
2016-01-01	1.01365995407104