Year	Ratio
2001-01-01	1.21057999134064
2002-01-01	1.24099004268646
2003-01-01	1.30525004863739
2004-01-01	1.31647002696991
2005-01-01	1.29797005653381
2006-01-01	1.28814005851746
2007-01-01	1.28859996795654
2008-01-01	1.29811000823975
2009-01-01	1.29281997680664
2010-01-01	1.29842996597290
2011-01-01	1.31675004959106
2012-01-01	1.32406997680664
2013-01-01	1.32771003246307
2014-01-01	1.30701994895935
2015-01-01	1.33327996730804
2016-01-01	1.31431996822357