Year	Percent
2000-01-01	9.01758355152660
2001-01-01	8.69387112192748
2002-01-01	7.36939797390736
2003-01-01	8.92130339212049
2004-01-01	9.33060896673334
2005-01-01	8.88516946851861
2006-01-01	8.86359708164035
2007-01-01	7.12646135985442
2008-01-01	7.89798386733886
2009-01-01	8.53752957512461
2010-01-01	8.86036207129464
2011-01-01	8.10097898207571
2012-01-01	8.52032943338785
2013-01-01	9.04171082170328
2014-01-01	9.20271508513846
2015-01-01	9.94868734238830
2016-01-01	10.44216429740750
2017-01-01	9.63845551641624