Year	Percent
1996-01-01	32.3843
1997-01-01	36.4113
1998-01-01	28.9116
1999-01-01	33.2242
2000-01-01	36.1532
2001-01-01	34.4648
2002-01-01	30.4671
2003-01-01	30.8803
2004-01-01	31.9478
2005-01-01	28.6800
2006-01-01	29.3590
2007-01-01	28.2819
2008-01-01	27.0963
2009-01-01	26.3985
2010-01-01	26.4632
2011-01-01	26.4007
2012-01-01	26.4532
2013-01-01	27.8395
2014-01-01	27.3916