Year	Percent
2001-01-01	34.9818
2002-01-01	37.3081
2003-01-01	39.3928
2004-01-01	43.8411
2005-01-01	40.8023
2006-01-01	52.7187
2007-01-01	62.2318
2008-01-01	43.8032
2009-01-01	52.9570
2010-01-01	51.1728
2011-01-01	57.5792
2012-01-01	65.0038
2013-01-01	64.0797
2014-01-01	56.0183
2015-01-01	60.0257
2016-01-01	53.9775