Year Number 2005-01-01 555.1474 2006-01-01 718.3725 2007-01-01 861.9309 2008-01-01 969.2763 2009-01-01 939.2786 2010-01-01 902.8117 2011-01-01 816.8666 2012-01-01 636.8461 2013-01-01 604.9909 2014-01-01 588.6685 2015-01-01 607.1644 2016-01-01 630.1888