Year	Ratio
1971-01-01	1.08364999294281
1972-01-01	1.08495998382568
1973-01-01	1.10994994640350
1974-01-01	1.11020004749298
1976-01-01	1.13499999046326
1977-01-01	1.11592996120453
1978-01-01	1.11269998550415
1979-01-01	1.11080002784729
1980-01-01	1.11968994140625
1981-01-01	1.11449003219604
1982-01-01	1.12127995491028
1983-01-01	1.12839996814728
1984-01-01	1.16706001758575
1985-01-01	1.17472994327545
1986-01-01	1.16822004318237
1987-01-01	1.16673004627228
1988-01-01	1.16831994056702
1989-01-01	1.15900003910065
1990-01-01	1.18059003353119
1991-01-01	1.19451999664307
1992-01-01	1.21231997013092
1993-01-01	1.18248999118805
1994-01-01	1.16800999641418
1995-01-01	1.15149998664856
1996-01-01	1.17333996295929
1997-01-01	1.13648998737335
1998-01-01	1.09834003448486
1999-01-01	1.09038996696472
2000-01-01	1.09341001510620
2001-01-01	1.10427999496460
2002-01-01	1.10968995094299
2003-01-01	1.10380995273590
2004-01-01	1.04800999164581
2005-01-01	1.04566001892090
2006-01-01	1.04238998889923
2007-01-01	1.04559004306793
2008-01-01	1.04841995239258
2009-01-01	1.04881000518799
2010-01-01	1.04653000831604
2011-01-01	1.04522001743317
2012-01-01	1.04765999317169
2013-01-01	1.09581005573273
2014-01-01	1.09872996807098
2015-01-01	1.10133004188538
2016-01-01	1.10206997394562