Year	Percent
1996-01-01	16.7438000000000000
1997-01-01	17.8980000000000000
1998-01-01	11.6846000000000000
1999-01-01	6.3788800000000005
2000-01-01	6.4580699999999990
2001-01-01	8.9565600000000010
2002-01-01	17.4035000000000000
2003-01-01	19.3611000000000000
2004-01-01	8.0491400000000000
2005-01-01	19.8046000000000000
2006-01-01	15.6599000000000000
2007-01-01	19.9299000000000000
2008-01-01	18.1865000000000000
2009-01-01	18.1655000000000000
2010-01-01	20.0103000000000000
2011-01-01	13.1437000000000000
2012-01-01	15.5966000000000000
2013-01-01	17.9407000000000000
2014-01-01	16.9961000000000000
2015-01-01	22.4409000000000000
2016-01-01	13.8281000000000000