Year	Ratio
1993-01-01	1.34879004955292
1994-01-01	1.31698000431061
1995-01-01	1.26493000984192
1996-01-01	1.22277998924255
1997-01-01	1.22662997245789
1998-01-01	1.17068994045258
1999-01-01	1.05158996582031
2000-01-01	1.02269995212555
2001-01-01	1.05261003971100
2002-01-01	1.14933001995087
2003-01-01	1.19957995414734
2004-01-01	1.19754004478455
2005-01-01	1.25741004943848
2006-01-01	1.27337002754211
2007-01-01	1.29825997352600
2008-01-01	1.36562001705170
2009-01-01	1.34282994270325
2010-01-01	1.30405998229980
2011-01-01	1.24488997459412
2012-01-01	1.25979995727539
2013-01-01	1.28930997848511
2014-01-01	1.30241000652313
2015-01-01	1.30441999435425
2016-01-01	1.27801001071930