Year	Percent
1996-01-01	44.0252
1997-01-01	48.1189
1998-01-01	28.7274
1999-01-01	35.1089
2000-01-01	40.3568
2001-01-01	26.7252
2002-01-01	18.7004
2003-01-01	12.5000
2004-01-01	23.6032
2005-01-01	27.6909
2006-01-01	12.9722
2007-01-01	16.8721
2008-01-01	17.1617
2009-01-01	19.4357
2010-01-01	28.7661
2011-01-01	16.1303
2012-01-01	11.5016
2013-01-01	11.5016
2014-01-01	14.9254
2015-01-01	10.6032