Year	Percent
2000-01-01	13.44183136935640
2001-01-01	12.59248291420920
2002-01-01	10.13382414349240
2003-01-01	11.72888831448600
2004-01-01	12.00270317267060
2005-01-01	12.06708042961820
2006-01-01	11.79826686735340
2007-01-01	11.10323609965100
2008-01-01	11.43470403725380
2009-01-01	11.93572202895000
2010-01-01	11.08518769348540
2011-01-01	11.93294216204470
2012-01-01	9.68941923200594
2013-01-01	9.73395950960274
2014-01-01	11.14921156576450
2015-01-01	11.28350228326660
2016-01-01	10.95973084860930
2017-01-01	11.22136555251190