Year Percent Change 2000-01-01 3.2541 2001-01-01 4.7149 2002-01-01 3.8957 2003-01-01 5.1519 2004-01-01 10.3676 2005-01-01 12.1256 2006-01-01 6.2410 2007-01-01 7.2544 2008-01-01 7.4503 2009-01-01 2.1370 2010-01-01 6.2620 2011-01-01 5.6864 2012-01-01 4.9024 2013-01-01 4.1313 2014-01-01 3.7724 2015-01-01 0.4862 2016-01-01 1.4717 2017-01-01 2.2694 2018-01-01 3.7048 2019-01-01 4.9743