Year Number 2004-01-01 14.1241 2005-01-01 19.9995 2006-01-01 20.0845 2007-01-01 37.5835 2008-01-01 40.4833 2009-01-01 47.7908 2010-01-01 53.3836 2011-01-01 63.5812 2012-01-01 86.7762 2013-01-01 89.6372 2014-01-01 114.5091 2015-01-01 134.1419