Year	Percent
1996-01-01	35.6761
1997-01-01	35.0735
1998-01-01	37.0480
1999-01-01	34.6669
2000-01-01	34.1126
2001-01-01	35.6177
2002-01-01	37.2666
2003-01-01	36.3008
2004-01-01	36.4120
2005-01-01	37.6671
2006-01-01	36.6385
2007-01-01	34.1304
2008-01-01	34.7366
2009-01-01	31.6821
2010-01-01	32.3221
2011-01-01	35.8875
2012-01-01	32.8682
2013-01-01	33.0223
2014-01-01	35.9127