Year	Percent
1996-01-01	35.6445
1997-01-01	35.6602
1998-01-01	40.9634
1999-01-01	34.6691
2000-01-01	25.2200
2001-01-01	18.5590
2002-01-01	39.4399
2003-01-01	57.9315
2004-01-01	54.2213
2005-01-01	59.1100
2006-01-01	55.4788
2007-01-01	46.2008
2008-01-01	78.8297
2009-01-01	50.5600
2010-01-01	24.2731
2011-01-01	35.7236
2012-01-01	52.4752
2013-01-01	45.2926
2014-01-01	47.1025