Year	Percent
2002-01-01	3.3280500000000000
2003-01-01	5.4502400000000000
2004-01-01	4.0064100000000000
2005-01-01	4.4353800000000000
2006-01-01	2.9780000000000000
2007-01-01	4.7422699999999995
2008-01-01	4.7422699999999995
2009-01-01	4.7422699999999995
2010-01-01	4.7422699999999995
2011-01-01	3.0947800000000000
2012-01-01	3.4240300000000000
2013-01-01	3.1945200000000002
2014-01-01	3.2688599999999997
2015-01-01	3.0119599999999997
2016-01-01	2.9543100000000000