Year Number 2005-01-01 34.6443 2006-01-01 42.2046 2007-01-01 50.3651 2008-01-01 48.8736 2009-01-01 47.7595 2010-01-01 51.6639 2011-01-01 51.7571 2012-01-01 68.1674 2013-01-01 291.2031