Year	Percent
1996-01-01	32.6943
1997-01-01	36.6623
1998-01-01	35.8447
1999-01-01	35.8423
2000-01-01	35.7218
2001-01-01	42.1205
2002-01-01	38.6346
2003-01-01	40.4718
2004-01-01	43.7858
2005-01-01	44.5764
2006-01-01	43.9176
2007-01-01	44.9249
2008-01-01	45.4858
2009-01-01	44.8857
2010-01-01	43.8503
2011-01-01	42.1799
2012-01-01	40.3195
2013-01-01	40.8096
2014-01-01	41.2444
2015-01-01	40.1084
2016-01-01	39.1819