Year	Percent
1996-01-01	59.8452
1997-01-01	79.8863
1998-01-01	66.0218
1999-01-01	62.7404
2000-01-01	44.8023
2001-01-01	49.5600
2002-01-01	48.9474
2003-01-01	54.3559
2004-01-01	53.6528
2005-01-01	52.8628
2006-01-01	52.2455
2007-01-01	53.4270
2008-01-01	62.2047
2009-01-01	53.5618
2010-01-01	55.2077
2011-01-01	43.0392
2012-01-01	42.2796
2013-01-01	42.7645
2014-01-01	48.6140
2015-01-01	54.8393
2016-01-01	54.3584