Year	Percent
1996-01-01	56.2324
1997-01-01	62.2018
1998-01-01	78.3376
1999-01-01	77.9061
2000-01-01	86.1941
2001-01-01	82.5545
2002-01-01	79.0648
2003-01-01	92.0659
2004-01-01	85.0858
2005-01-01	89.3240
2006-01-01	82.6689
2007-01-01	81.6734
2008-01-01	68.6608
2009-01-01	74.5074
2010-01-01	60.8081
2011-01-01	27.9210
2012-01-01	39.7750
2013-01-01	39.4557
2014-01-01	50.5966
2015-01-01	45.4270
2016-01-01	44.5956