Year	Percent
1996-01-01	2.6974200000000000
1997-01-01	3.1528900000000000
1998-01-01	3.1043200000000000
1999-01-01	3.0476900000000002
2000-01-01	3.5929200000000000
2001-01-01	3.8321800000000000
2002-01-01	4.6930000000000005
2003-01-01	4.5223900000000010
2004-01-01	3.9893300000000003
2005-01-01	3.8917599999999997
2006-01-01	3.7081100000000000
2007-01-01	2.7811900000000000
2008-01-01	2.8024400000000003
2009-01-01	2.6615700000000000
2010-01-01	2.9261900000000000
2011-01-01	3.1862300000000000
2012-01-01	3.0350500000000000
2013-01-01	3.0024000000000000
2014-01-01	2.3995200000000000
2015-01-01	1.4906000000000000
2016-01-01	1.7236799999999999