Year	Percent
1996-01-01	2.9428500000000000
1997-01-01	5.3074400000000000
1998-01-01	8.1903500000000000
1999-01-01	5.5953100000000000
2000-01-01	6.3548700000000000
2001-01-01	6.0783000000000000
2002-01-01	6.4859500000000000
2003-01-01	6.0135700000000000
2004-01-01	5.1037300000000005
2005-01-01	4.8289500000000000
2006-01-01	4.7047400000000000
2007-01-01	4.7311000000000000
2008-01-01	4.1492100000000000
2009-01-01	4.2627100000000000
2010-01-01	4.4327500000000000
2011-01-01	4.7636000000000000
2012-01-01	4.7334400000000000
2013-01-01	4.6488400000000000
2014-01-01	4.2258500000000000
2015-01-01	4.1875400000000000
2016-01-01	3.7899199999999995