Year	Percent
1999-01-01	86.2000
2000-01-01	86.2000
2001-01-01	60.1000
2002-01-01	61.2000
2003-01-01	64.9000
2004-01-01	73.6000
2005-01-01	40.4000
2006-01-01	41.3000
2007-01-01	39.3000
2008-01-01	42.9000
2009-01-01	39.1000
2010-01-01	39.9801
2011-01-01	38.7584
2012-01-01	40.4304
2013-01-01	34.8184
2014-01-01	32.5628
2015-01-01	26.1825
2016-01-01	29.4956