Year	Percent
1996-01-01	32.2148
1997-01-01	33.3333
1998-01-01	32.6425
1999-01-01	30.8530
2000-01-01	29.1737
2001-01-01	34.3891
2002-01-01	35.1014
2003-01-01	40.3433
2004-01-01	40.3042
2005-01-01	39.2890
2006-01-01	28.1356
2007-01-01	26.7751
2008-01-01	23.9914
2009-01-01	27.8871
2010-01-01	31.8579
2011-01-01	32.0383
2012-01-01	31.5152
2013-01-01	29.5071
2014-01-01	30.6569