Year	Percent
2000-01-01	8.036410000000000
2001-01-01	7.963290000000000
2002-01-01	8.398340000000000
2003-01-01	9.970780000000000
2004-01-01	18.688300000000000
2005-01-01	24.901999999999997
2006-01-01	7.074050000000000
2007-01-01	24.620400000000000
2008-01-01	18.399900000000000
2009-01-01	17.873500000000000
2010-01-01	16.361600000000000
2011-01-01	23.984400000000000
2012-01-01	19.419800000000000
2013-01-01	18.202000000000000
2014-01-01	22.035900000000000
2015-01-01	24.443000000000000
2016-01-01	21.996200000000000