Year	Ratio
2001-01-01	1.32823002338409
2002-01-01	1.37190997600555
2003-01-01	1.47072005271912
2004-01-01	1.63338005542755
2005-01-01	1.58232998847961
2006-01-01	1.56043994426727
2007-01-01	1.40391004085541
2008-01-01	1.25899994373322
2009-01-01	1.30156004428864
2010-01-01	1.25468003749847
2016-01-01	1.24679994583130