Year	Percent
2002-01-01	5.63424
2003-01-01	7.42207
2004-01-01	7.04582
2005-01-01	9.77863
2006-01-01	13.40370
2007-01-01	10.50510
2008-01-01	8.26321
2009-01-01	14.44990
2010-01-01	17.52130
2011-01-01	12.15650
2012-01-01	15.25850
2013-01-01	18.42830
2014-01-01	18.31190
2015-01-01	23.27950
2016-01-01	30.95360