Year	Percent
1996-01-01	35.1155
1997-01-01	36.4929
1998-01-01	35.6019
1999-01-01	35.8154
2000-01-01	29.5000
2001-01-01	32.4653
2002-01-01	17.0868
2003-01-01	22.2527
2004-01-01	42.6320
2005-01-01	39.9502
2006-01-01	38.0397
2007-01-01	37.7467
2008-01-01	32.7636
2009-01-01	36.6699
2010-01-01	41.4572
2011-01-01	30.3371
2012-01-01	51.2392
2013-01-01	40.3525
2014-01-01	45.8042