Year	Percent
1996-01-01	43.3134
1997-01-01	43.9702
1998-01-01	54.5309
1999-01-01	53.8664
2000-01-01	53.1968
2001-01-01	58.1606
2002-01-01	57.7793
2003-01-01	57.0382
2004-01-01	54.5148
2005-01-01	59.8393
2006-01-01	61.0977
2007-01-01	57.6399
2008-01-01	60.7049
2009-01-01	57.9071
2010-01-01	50.2635
2011-01-01	49.4942
2012-01-01	50.6048
2013-01-01	50.7272
2014-01-01	48.6872
2015-01-01	85.7497
2016-01-01	52.5367