Year	Ratio
1992-01-01	1.076159954071040
1993-01-01	1.068869948387150
1994-01-01	1.128489971160890
1995-01-01	1.119400024414060
1996-01-01	1.108970046043400
1998-01-01	1.055439949035640
1999-01-01	1.057649970054630
2000-01-01	1.060070037841800
2001-01-01	1.052139997482300
2002-01-01	1.049530029296880
2003-01-01	1.063860058784480
2004-01-01	1.047930002212520
2005-01-01	1.036010026931760
2006-01-01	1.041290044784550
2007-01-01	1.035359978675840
2008-01-01	1.035539984703060
2009-01-01	1.022959947586060
2010-01-01	1.000620007514950
2011-01-01	0.986840009689331
2012-01-01	0.988219976425171
2013-01-01	0.991110026836395
2014-01-01	0.995320022106171
2015-01-01	0.996450006961823