Year	Ratio
1971-01-01	0.990249991416931
1972-01-01	0.981310009956360
1973-01-01	0.987969994544983
1974-01-01	1.033270001411440
1975-01-01	1.052649974823000
1977-01-01	0.933480024337769
1978-01-01	0.937259972095490
1979-01-01	0.937969982624054
1980-01-01	0.948700010776520
1981-01-01	0.976930022239685
1982-01-01	0.998470008373261
1983-01-01	1.014660000801090
1984-01-01	0.954330027103424
1985-01-01	0.975499987602234
1986-01-01	0.996039986610413
1987-01-01	1.032299995422360
1988-01-01	1.057559967041020
1989-01-01	1.085809946060180
1990-01-01	1.108109951019290
1991-01-01	1.133839964866640
1992-01-01	1.160609960556030
1993-01-01	1.177790045738220
1994-01-01	1.180690050125120
1995-01-01	1.174419999122620
1996-01-01	1.164270043373110
1997-01-01	1.171249985694890
1998-01-01	1.202710032463070
1999-01-01	1.224329948425290
2000-01-01	1.211040019989010
2001-01-01	1.218459963798520
2002-01-01	1.231619954109190
2003-01-01	1.203140020370480
2004-01-01	1.198789954185490
2005-01-01	1.206940054893490
2006-01-01	1.223279953002930
2007-01-01	1.231619954109190
2008-01-01	1.242990016937260
2009-01-01	1.232920050621030
2010-01-01	1.223119974136350
2011-01-01	1.230870008468630
2012-01-01	1.211089968681340
2013-01-01	1.208039999008180
2014-01-01	1.203209996223450
2015-01-01	1.199869990348820
2016-01-01	1.185160040855410