Year	Percent
1996-01-01	2.8223900000000000
1997-01-01	1.8550099999999998
1998-01-01	2.7108700000000000
1999-01-01	5.3171100000000000
2000-01-01	3.2582200000000000
2001-01-01	2.8704099999999997
2002-01-01	3.9050800000000003
2003-01-01	4.8368000000000000
2004-01-01	3.8758199999999996
2005-01-01	2.2319800000000000
2006-01-01	5.7040600000000000
2007-01-01	5.4362200000000000
2008-01-01	3.9705699999999995
2009-01-01	6.1871900000000000
2010-01-01	4.4899900000000000
2011-01-01	2.9799500000000000
2012-01-01	4.8951600000000000
2013-01-01	2.0023500000000000
2014-01-01	2.2005500000000000
2015-01-01	3.1101900000000002
2016-01-01	3.4926500000000000