Year	Percent
2000-01-01	17.6000
2001-01-01	13.2000
2002-01-01	13.2000
2003-01-01	17.3000
2004-01-01	16.6000
2005-01-01	16.3000
2006-01-01	17.0000
2007-01-01	18.0000
2008-01-01	18.9000
2009-01-01	19.6000
2010-01-01	20.8386
2011-01-01	19.4371
2012-01-01	20.9776
2013-01-01	23.1577
2014-01-01	19.1932
2015-01-01	21.6785
2016-01-01	18.8736