Year	Percent
2004-01-01	44.8148
2005-01-01	38.0833
2006-01-01	36.6472
2007-01-01	34.6316
2008-01-01	37.1700
2009-01-01	41.1698
2010-01-01	40.5193
2011-01-01	41.1118
2012-01-01	42.1794
2013-01-01	39.1029
2014-01-01	41.7437