Year	Percent
2002-01-01	100.0000
2003-01-01	96.7590
2004-01-01	95.4706
2005-01-01	91.7889
2006-01-01	92.3358
2007-01-01	90.5158
2008-01-01	91.0031
2009-01-01	86.9219
2010-01-01	87.2697
2011-01-01	85.4279
2012-01-01	83.0410
2013-01-01	80.9694
2014-01-01	80.1894
2015-01-01	73.9016
2016-01-01	77.8720