Year	Ratio
1970-01-01	0.983630001544952
1971-01-01	0.982540011405945
1972-01-01	0.986769974231720
1973-01-01	0.996580004692078
1974-01-01	1.003640055656430
1975-01-01	1.009510040283200
1976-01-01	1.012730002403260
1977-01-01	1.015349984169010
1979-01-01	1.024700045585630
1980-01-01	1.021569967269900
1981-01-01	1.023790001869200
1982-01-01	1.033030033111570
1983-01-01	1.024009943008420
1984-01-01	1.018039941787720
1985-01-01	1.022269964218140
1986-01-01	1.010210037231450
1987-01-01	1.008800029754640
1988-01-01	1.004899978637700
1989-01-01	1.006240010261540
1990-01-01	1.003939986228940
1991-01-01	1.004369974136350
1992-01-01	0.993049979209900
1993-01-01	1.001289963722230
1994-01-01	1.024780035018920
1995-01-01	0.984030008316040
1996-01-01	1.051329970359800
1997-01-01	1.048370003700260
1998-01-01	1.059489965438840
1999-01-01	1.051970005035400
2000-01-01	1.058619976043700
2002-01-01	1.108749985694890
2003-01-01	1.098600029945370
2004-01-01	1.055809974670410
2005-01-01	1.055570006370540
2006-01-01	1.044029951095580
2007-01-01	1.024620056152340
2008-01-01	1.047049999237060
2009-01-01	1.028810024261470
2010-01-01	1.046169996261600
2011-01-01	1.056450009346010
2012-01-01	1.060559988021850
2013-01-01	1.068490028381350
2014-01-01	1.064419984817500
2015-01-01	1.059229969978330
2016-01-01	1.061319947242740