Year Number 2004-01-01 374.9931 2005-01-01 374.2579 2006-01-01 375.7668 2007-01-01 379.7174 2008-01-01 381.1852 2009-01-01 403.8464 2010-01-01 398.5352 2011-01-01 390.8765 2012-01-01 388.5039 2013-01-01 389.5381 2014-01-01 386.9569 2015-01-01 387.3519 2016-01-01 387.5933 2017-01-01 387.0831