Year Percent Change 2000-01-01 38.5539 2001-01-01 4.2848 2002-01-01 33.9769 2003-01-01 10.3507 2004-01-01 22.2932 2005-01-01 27.8412 2006-01-01 32.8788 2007-01-01 42.3269 2008-01-01 2.4414 2009-01-01 16.3506 2010-01-01 10.5801 2011-01-01 23.6408 2012-01-01 19.5625 2013-01-01 15.2281 2014-01-01 8.8680 2015-01-01 10.6508 2016-01-01 16.5979 2017-01-01 17.7242 2018-01-01 7.6773 2019-01-01 10.0000