Year	Percent
1996-01-01	38.1093
1997-01-01	43.1766
1998-01-01	42.3236
1999-01-01	42.6592
2000-01-01	43.7679
2001-01-01	41.1932
2002-01-01	35.1562
2003-01-01	30.5496
2004-01-01	30.2066
2005-01-01	31.1399
2006-01-01	32.7862
2007-01-01	32.1123
2008-01-01	37.9447
2009-01-01	31.5900
2010-01-01	30.4992
2011-01-01	30.6820
2012-01-01	27.5246
2013-01-01	36.9987
2014-01-01	39.6918