Year Percent 2001-01-01 -0.8166666666666830 2002-01-01 -0.2856662745757700 2003-01-01 0.1853724300641350 2004-01-01 0.7569386038687820 2005-01-01 1.8614357262103200 2006-01-01 3.2041301319348000 2007-01-01 5.9552167698903700 2008-01-01 12.0908273381295000 2009-01-01 3.9351758995547800 2010-01-01 3.2033963720571100 2011-01-01 4.0421886711639600 2012-01-01 2.9477349525720700 2013-01-01 1.0455283875536300 2014-01-01 1.0223431445296500 2015-01-01 0.0652901330286481 2016-01-01 1.1092080580702900 2017-01-01 1.5971606033717700