Year	Percent
1996-01-01	6.0000000000000000
1997-01-01	5.5555600000000000
1998-01-01	5.4597700000000000
1999-01-01	5.8072000000000000
2000-01-01	8.1757200000000000
2001-01-01	3.8257199999999996
2002-01-01	4.5242800000000000
2003-01-01	4.4632100000000000
2004-01-01	4.6953600000000000
2005-01-01	4.8067900000000000
2006-01-01	4.8448100000000000
2007-01-01	4.9903000000000000
2008-01-01	4.7247699999999995
2009-01-01	5.4707200000000000
2010-01-01	4.1213100000000000
2011-01-01	3.9807600000000000
2012-01-01	3.3553300000000004
2013-01-01	3.0458800000000000
2014-01-01	2.2379100000000000
2015-01-01	2.6357500000000000
2016-01-01	3.2921000000000000