Year Percent Change 2000-01-01 3.9079 2001-01-01 1.9671 2002-01-01 3.1119 2003-01-01 4.7258 2004-01-01 7.4827 2005-01-01 8.9584 2006-01-01 5.8183 2007-01-01 5.5366 2008-01-01 4.9881 2009-01-01 0.3607 2010-01-01 2.5805 2011-01-01 3.6238 2012-01-01 3.8367 2013-01-01 3.6831 2014-01-01 4.0534 2015-01-01 4.0579 2016-01-01 4.5055 2017-01-01 5.2769 2018-01-01 5.5696 2019-01-01 4.7001