Year Percent 1996-01-01 0.00000000000000000 1997-01-01 0.00000000000000000 1998-01-01 0.90068200000000000 1999-01-01 0.78731500000000000 2000-01-01 0.09087900000000000 2001-01-01 0.52271000000000000 2002-01-01 1.32977000000000010 2003-01-01 0.08822300000000000 2004-01-01 1.30746000000000000 2005-01-01 0.89451700000000000 2006-01-01 -0.02650500000000000 2007-01-01 -0.49358100000000005 2008-01-01 1.01655000000000000 2009-01-01 1.64457000000000000 2010-01-01 1.03730000000000000 2011-01-01 1.13734000000000000 2012-01-01 0.66607800000000000 2013-01-01 0.61645699999999990 2014-01-01 0.57752000000000000 2015-01-01 1.50120000000000000 2016-01-01 3.13112999999999970