Year	Ratio
1993-01-01	1.034379959106450
1994-01-01	1.027070045471190
1995-01-01	1.026710033416750
1996-01-01	1.026839971542360
1997-01-01	1.027809977531430
1998-01-01	1.028139948844910
1999-01-01	1.025850057601930
2000-01-01	1.032299995422360
2001-01-01	1.018300056457520
2002-01-01	1.001559972763060
2003-01-01	0.991550028324127
2004-01-01	0.996029973030090
2005-01-01	0.994159996509552
2006-01-01	0.996590018272400
2007-01-01	0.993420004844666
2008-01-01	0.994430005550385
2009-01-01	0.997359991073608
2010-01-01	0.989239990711212
2011-01-01	0.985480010509491
2012-01-01	0.991050004959106
2013-01-01	0.997070014476776
2014-01-01	0.997860014438629
2015-01-01	1.002869963645940