Year Percent Change 2000-01-01 8.0331 2001-01-01 4.8715 2002-01-01 8.3338 2003-01-01 7.7108 2004-01-01 8.4180 2005-01-01 8.4895 2006-01-01 7.1998 2007-01-01 7.9987 2008-01-01 14.2843 2009-01-01 11.2591 2010-01-01 12.9777 2011-01-01 18.2771 2012-01-01 35.3523 2013-01-01 36.5223 2014-01-01 36.9066 2015-01-01 16.9096 2016-01-01 17.7503 2017-01-01 32.3516 2018-01-01 43.5242 2019-01-01 39.5000