Year	Percent
2000-01-01	10.77
2001-01-01	11.59
2002-01-01	11.24
2003-01-01	12.57
2004-01-01	13.11
2005-01-01	13.66
2006-01-01	15.49
2007-01-01	16.63
2008-01-01	14.14
2009-01-01	15.30
2010-01-01	14.45
2011-01-01	13.64
2012-01-01	14.07
2013-01-01	12.78
2014-01-01	12.19
2015-01-01	12.03
2016-01-01	12.68