Year	Percent
1996-01-01	11.167400000000000
1997-01-01	15.124000000000000
1998-01-01	10.259200000000000
1999-01-01	7.696000000000001
2000-01-01	7.681150000000000
2001-01-01	7.042590000000000
2002-01-01	6.294050000000000
2003-01-01	5.889260000000000
2004-01-01	5.884080000000000
2005-01-01	4.626330000000000
2006-01-01	4.594350000000000
2007-01-01	6.657430000000001
2008-01-01	6.848039999999999
2009-01-01	4.242710000000000
2010-01-01	4.152600000000000
2011-01-01	4.632780000000000
2012-01-01	5.214160000000000
2013-01-01	5.927620000000000
2014-01-01	4.875590000000000
2015-01-01	3.320730000000000
2016-01-01	4.582890000000000