Year	Ratio
1971-01-01	1.019559979438780
1972-01-01	1.018560051918030
1973-01-01	1.016379952430730
1974-01-01	1.010859966278080
1975-01-01	1.009690046310420
1976-01-01	1.008649945259090
1977-01-01	1.007009983062740
1978-01-01	1.004169940948490
1979-01-01	0.998929977416992
1980-01-01	1.000020027160640
1981-01-01	1.001129984855650
1982-01-01	0.999769985675812
1983-01-01	1.001489996910100
1984-01-01	0.998139977455139
1985-01-01	1.012159943580630
1986-01-01	0.997430026531219
1987-01-01	0.997780025005341
1988-01-01	0.998269975185394
1989-01-01	0.999639987945557
1990-01-01	1.000540018081670
1991-01-01	1.002220034599300
1992-01-01	1.003149986267090
1993-01-01	1.014439940452580
1994-01-01	1.014729976654050
1995-01-01	1.014479994773860
1996-01-01	1.014600038528440
1997-01-01	1.014700055122380
1998-01-01	1.034530043601990
1999-01-01	1.029989957809450
2000-01-01	1.025609970092770
2001-01-01	1.025480031967160
2002-01-01	1.027330040931700
2003-01-01	1.025550007820130
2004-01-01	0.995260000228882
2005-01-01	0.996999979019165
2006-01-01	0.997550010681152
2007-01-01	0.997229993343353
2008-01-01	0.994780004024506
2009-01-01	0.995119988918304
2010-01-01	0.994780004024506
2011-01-01	0.996010005474091
2012-01-01	0.998409986495972
2013-01-01	1.059100031852720
2014-01-01	1.055739998817440
2015-01-01	1.041689991950990