Year	Percent
2002-01-01	88.0165
2003-01-01	80.7339
2004-01-01	46.9077
2005-01-01	42.9668
2006-01-01	44.1947
2007-01-01	48.2044
2008-01-01	49.7813
2009-01-01	50.3244
2010-01-01	52.6845
2011-01-01	59.8893
2012-01-01	62.8937
2013-01-01	65.8965
2014-01-01	63.6197