Year	Percent
2003-01-01	51.5474
2004-01-01	45.6642
2005-01-01	37.2130
2006-01-01	32.6290
2007-01-01	26.5439
2008-01-01	25.9202
2009-01-01	27.2033
2010-01-01	20.6855
2011-01-01	20.9044
2012-01-01	18.1782
2013-01-01	22.1971
2014-01-01	26.0824
2015-01-01	29.0331
2016-01-01	28.4608