Year	Percent
2002-01-01	46.02
2003-01-01	51.64
2004-01-01	59.39
2005-01-01	69.42
2006-01-01	78.37
2007-01-01	81.20
2008-01-01	72.05
2009-01-01	98.10
2010-01-01	112.01
2011-01-01	107.07
2012-01-01	110.77
2013-01-01	114.17
2014-01-01	119.47
2015-01-01	94.40