Year	Percent
1996-01-01	35.3903
1997-01-01	39.8914
1998-01-01	39.8024
1999-01-01	40.3265
2000-01-01	42.5440
2001-01-01	40.4310
2002-01-01	38.6483
2003-01-01	41.6557
2004-01-01	41.8014
2005-01-01	39.8053
2006-01-01	39.1005
2007-01-01	34.2156
2008-01-01	49.0586
2009-01-01	55.9819
2010-01-01	57.5533
2011-01-01	65.3478
2012-01-01	58.2342
2013-01-01	68.8584
2014-01-01	76.6327
2015-01-01	55.5280
2016-01-01	55.3154