Year	Ratio
1999-01-01	1.01151001453400
2000-01-01	1.02076005935669
2001-01-01	1.01809000968933
2002-01-01	1.02778005599976
2003-01-01	1.03621995449066
2004-01-01	1.03185999393463
2005-01-01	1.03050994873047
2006-01-01	1.03718996047974
2007-01-01	1.02889001369476
2008-01-01	1.02657997608185
2009-01-01	1.02590000629425
2010-01-01	1.01999998092651
2011-01-01	1.02499997615814
2012-01-01	1.02903997898102
2013-01-01	1.02749001979828
2014-01-01	1.02216994762421
2015-01-01	1.01440000534058
2016-01-01	1.01317000389099