Year	Ratio
1970-01-01	1.319900035858150
1971-01-01	1.324550032615660
1972-01-01	1.228670001029970
1973-01-01	1.286090016365050
1974-01-01	1.217079997062680
1975-01-01	1.361439943313600
1976-01-01	1.318169951438900
1978-01-01	1.235080003738400
1979-01-01	1.198869943618770
1980-01-01	1.176820039749150
1981-01-01	1.165519952774050
1982-01-01	1.177150011062620
1983-01-01	1.095319986343380
1985-01-01	1.019760012626650
1986-01-01	0.984189987182617
1987-01-01	0.941609978675842
1988-01-01	0.952139973640442
1989-01-01	0.974789977073669
1991-01-01	0.991859972476959
1992-01-01	1.011700034141540
1993-01-01	1.029360055923460
1994-01-01	1.032580018043520
1995-01-01	0.999890029430389
1996-01-01	1.015509963035580
1998-01-01	0.996860027313232
1999-01-01	1.075809955596920
2000-01-01	1.098790049552920
2001-01-01	1.079149961471560
2002-01-01	1.077739953994750
2003-01-01	1.079480051994320
2004-01-01	1.104650020599370
2005-01-01	1.072649955749510
2006-01-01	1.075279951095580
2007-01-01	1.103379964828490
2008-01-01	1.131950020790100
2009-01-01	1.113940000534060
2010-01-01	1.063140034675600
2011-01-01	1.055420041084290
2012-01-01	0.996789991855621
2013-01-01	1.085350036621090
2014-01-01	1.032009959220890
2015-01-01	1.045390009880070
2016-01-01	1.069010019302370