Year	Ratio
1999-01-01	1.12457001209259
2000-01-01	1.23081004619598
2001-01-01	1.15555000305176
2002-01-01	1.18162000179291
2003-01-01	1.15654003620148
2004-01-01	1.13221001625061
2005-01-01	1.12958002090454
2006-01-01	1.19084000587463
2007-01-01	1.18606996536255
2008-01-01	1.09011995792389
2009-01-01	1.13283002376556
2010-01-01	1.17180001735687
2011-01-01	1.04672002792358
2012-01-01	1.12613999843597
2013-01-01	1.11519002914429
2014-01-01	1.06436002254486