Year Number 2005-01-01 867.0886 2006-01-01 1035.7420 2007-01-01 1186.9381 2008-01-01 1175.3962 2009-01-01 1182.0090 2010-01-01 1169.9710 2011-01-01 1338.4131 2012-01-01 1509.7548 2013-01-01 1677.2805 2014-01-01 1706.9933 2015-01-01 1853.7900