Year	Percent
1996-01-01	83.7659
1997-01-01	82.4873
1998-01-01	89.1710
1999-01-01	93.6118
2000-01-01	88.4797
2001-01-01	64.6943
2002-01-01	55.3579
2003-01-01	52.8959
2004-01-01	42.3739
2005-01-01	44.9787
2006-01-01	41.7449
2007-01-01	40.1056
2008-01-01	39.9286
2009-01-01	38.3581
2010-01-01	35.5266
2011-01-01	37.9396
2012-01-01	39.7982
2013-01-01	42.7316
2014-01-01	45.2118
2015-01-01	56.1596
2016-01-01	50.2700