Year	Ratio
1970-01-01	0.973259985446930
1971-01-01	0.982689976692200
1972-01-01	0.996140003204346
1973-01-01	1.008640050888060
1974-01-01	1.020859956741330
1975-01-01	1.022050023078920
1976-01-01	1.024219989776610
1977-01-01	1.025220036506650
1978-01-01	1.030990004539490
1979-01-01	1.033280014991760
1980-01-01	1.038159966468810
1981-01-01	1.044020056724550
1982-01-01	1.043939948081970
1983-01-01	1.162950038909910
1984-01-01	1.025040030479430
1985-01-01	1.025159955024720
1986-01-01	1.028300046920780
1987-01-01	1.025079965591430
1988-01-01	1.025720000267030
1989-01-01	1.026489973068240
1991-01-01	1.190809965133670
1992-01-01	1.195739984512330
1993-01-01	1.161749958992000
1995-01-01	1.155570030212400
1996-01-01	1.051880002021790
1998-01-01	1.114820003509520
1999-01-01	1.110309958457950
2000-01-01	1.102650046348570
2002-01-01	1.105469942092900
2004-01-01	1.109640002250670
2005-01-01	1.106680035591130
2006-01-01	1.114570021629330
2007-01-01	1.112100005149840
2008-01-01	1.101430058479310
2009-01-01	1.103199958801270
2010-01-01	1.098649978637700
2011-01-01	1.089939951896670
2012-01-01	1.089220046997070
2013-01-01	1.081879973411560
2014-01-01	1.079239964485170
2015-01-01	1.071280002593990
2016-01-01	1.063809990882870