Year	Ratio
1970-01-01	1.021239995956420
1971-01-01	1.056200027465820
1972-01-01	1.031180024147030
1973-01-01	1.030110001564030
1975-01-01	1.014240026474000
1976-01-01	1.014299988746640
1977-01-01	1.000939965248110
1978-01-01	1.004019975662230
1986-01-01	0.987410008907318
1987-01-01	0.984030008316040
1988-01-01	0.983070015907288
1989-01-01	1.047829985618590
1990-01-01	1.035339951515200
1991-01-01	1.052060008049010
1993-01-01	1.055230021476750
1994-01-01	1.045600056648250
1995-01-01	1.067669987678530
1996-01-01	1.055439949035640
1997-01-01	1.054790019989010
1998-01-01	1.049929976463320
1999-01-01	1.038930058479310
2000-01-01	1.034070014953610
2001-01-01	1.022320032119750
2002-01-01	1.014670014381410
2003-01-01	1.013599991798400
2004-01-01	1.019189953804020
2005-01-01	1.027050018310550
2006-01-01	1.037260055541990
2007-01-01	1.040249943733220
2008-01-01	1.048079967498780
2009-01-01	1.051010012626650
2010-01-01	1.055420041084290
2011-01-01	1.057739973068240
2012-01-01	1.065619945526120