Year	Percent
1996-01-01	23.0000
1997-01-01	30.0613
1998-01-01	26.1146
1999-01-01	23.8095
2000-01-01	21.6374
2001-01-01	21.3115
2002-01-01	22.7488
2003-01-01	23.6967
2004-01-01	23.3184
2005-01-01	23.2365
2006-01-01	25.5892
2007-01-01	31.7585
2008-01-01	32.9918
2009-01-01	32.6642
2010-01-01	25.0943
2011-01-01	27.5168
2012-01-01	27.3669
2013-01-01	28.6501
2014-01-01	31.1111