Year Percent Change 2000-01-01 15.3160 2001-01-01 15.2545 2002-01-01 15.6015 2003-01-01 16.1293 2004-01-01 23.2470 2005-01-01 33.7766 2006-01-01 23.2149 2007-01-01 41.6753 2008-01-01 19.0952 2009-01-01 8.0794 2010-01-01 6.2771 2011-01-01 5.0792 2012-01-01 4.4870 2013-01-01 22.7443 2014-01-01 7.9129 2015-01-01 5.4550 2016-01-01 3.2553 2017-01-01 0.6823 2018-01-01 11.1441 2019-01-01 7.0541