Year	Ratio
1971-01-01	1.025449991226200
1972-01-01	1.021209955215450
1973-01-01	1.010579943656920
1974-01-01	1.001909971237180
1975-01-01	1.027349948883060
1976-01-01	1.110509991645810
1977-01-01	1.115339994430540
1978-01-01	1.090890049934390
1979-01-01	1.097530007362370
1980-01-01	1.157940030097960
1981-01-01	1.004520058631900
1982-01-01	1.074519991874690
1983-01-01	1.033849954605100
1984-01-01	1.039870023727420
1985-01-01	1.024880051612850
1989-01-01	1.069139957427980
1990-01-01	0.904829978942871
1999-01-01	1.053269982337950
2000-01-01	1.037899971008300
2001-01-01	1.003700017929080
2002-01-01	1.000599980354310
2003-01-01	1.010599970817570
2004-01-01	1.004420042037960
2005-01-01	0.989199995994568
2006-01-01	1.021469950675960
2007-01-01	1.011440038681030
2008-01-01	1.024610042572020
2009-01-01	1.016229987144470
2010-01-01	1.005259990692140
2011-01-01	1.037330031394960
2014-01-01	1.025789976120000
2015-01-01	1.033030033111570
2016-01-01	1.046509981155400