Year	Percent
1996-01-01	2.4915900000000000
1997-01-01	2.5030600000000000
1998-01-01	2.2965600000000000
1999-01-01	2.1262100000000000
2000-01-01	3.6657400000000000
2001-01-01	2.3964100000000000
2002-01-01	2.0554600000000000
2003-01-01	2.3954200000000000
2004-01-01	2.6779500000000000
2005-01-01	2.9395800000000000
2006-01-01	2.4905300000000000
2007-01-01	2.4969700000000000
2008-01-01	2.4647000000000000
2009-01-01	2.2576300000000000
2010-01-01	2.2695700000000000
2011-01-01	2.4905000000000000
2012-01-01	2.4985000000000000
2013-01-01	2.3264200000000000
2014-01-01	2.0591400000000000
2015-01-01	1.9146800000000000
2016-01-01	1.9945400000000002