Year	Ratio
1999-01-01	1.063400030136110
2002-01-01	1.037279963493350
2003-01-01	1.076930046081540
2004-01-01	1.043159961700440
2005-01-01	1.001569986343380
2006-01-01	1.005609989166260
2007-01-01	0.996580004692078
2008-01-01	1.061750054359440
2009-01-01	1.029139995574950
2015-01-01	1.100090026855470
2016-01-01	1.095309972763060