Year	Ratio
1970-01-01	1.051229953765870
1971-01-01	1.056970000267030
1972-01-01	1.059790015220640
1973-01-01	1.083590030670170
1974-01-01	1.094169974327090
1975-01-01	1.122859954833980
1976-01-01	1.066699981689450
1977-01-01	1.079839944839480
1978-01-01	1.065819978713990
1979-01-01	1.036249995231630
1980-01-01	1.024209976196290
1981-01-01	1.005910038948060
1982-01-01	1.007949948310850
1983-01-01	1.019269943237300
1984-01-01	1.036739945411680
1985-01-01	1.035699963569640
1986-01-01	1.020619988441470
1987-01-01	1.037590026855470
1988-01-01	1.033570051193240
1989-01-01	0.999759972095490
1991-01-01	1.000689983367920
1992-01-01	0.988160014152527
1993-01-01	0.985629975795746
1994-01-01	1.011389970779420
1995-01-01	1.015439987182620
1996-01-01	1.024559974670410
1997-01-01	1.014320015907290
1998-01-01	1.019950032234190
1999-01-01	1.027709960937500
2000-01-01	1.028439998626710
2001-01-01	1.009109973907470
2002-01-01	0.996399998664856
2003-01-01	0.983780026435852
2004-01-01	0.990450024604797
2005-01-01	0.981500029563904
2006-01-01	0.999459981918335
2007-01-01	1.028859972953800
2008-01-01	1.040989995002750
2009-01-01	1.035189986228940
2010-01-01	1.030830025672910
2011-01-01	1.048269987106320
2012-01-01	1.026419997215270
2013-01-01	0.996349990367889
2014-01-01	0.981149971485138
2015-01-01	0.993149995803833
2016-01-01	0.992969989776611