Year	Ratio
1971-01-01	1.020460009574890
1972-01-01	1.018990039825440
1973-01-01	1.016659975051880
1974-01-01	1.015720009803770
1975-01-01	1.029279947280880
1976-01-01	0.992349982261658
1977-01-01	1.028620004653930
1978-01-01	1.027510046958920
1979-01-01	1.033149957656860
1980-01-01	1.003250002861020
1981-01-01	1.002429962158200
1982-01-01	1.002140045166020
1983-01-01	1.003129959106450
1984-01-01	0.999270021915436
1985-01-01	1.004940032958980
1986-01-01	0.998910009860992
1987-01-01	1.002529978752140
1988-01-01	1.003469944000240
1989-01-01	1.002990007400510
1990-01-01	1.003129959106450
1991-01-01	1.001240015029910
1992-01-01	0.998109996318817
1993-01-01	0.997420012950897
1994-01-01	0.997820019721985
1995-01-01	1.003379940986630
1996-01-01	0.996200025081635
1998-01-01	1.003110051155090
1999-01-01	1.003469944000240
2000-01-01	1.002859950065610
2001-01-01	1.003100037574770
2002-01-01	1.002709984779360
2004-01-01	0.998690009117126
2005-01-01	0.998880028724670
2006-01-01	1.000489950180050
2007-01-01	1.000710010528560
2008-01-01	1.005640029907230
2009-01-01	1.003700017929080
2010-01-01	1.002050042152400
2011-01-01	0.994090020656586
2012-01-01	0.991079986095428
2013-01-01	0.989619970321655
2014-01-01	0.988539993762970
2015-01-01	0.986670017242432
2016-01-01	0.988309979438782