Year Number 2005-01-01 0.0120 2006-01-01 0.7450 2007-01-01 1.3362 2008-01-01 3.7252 2009-01-01 4.3603 2010-01-01 5.2515 2011-01-01 6.0296 2012-01-01 7.1778 2013-01-01 8.4812 2014-01-01 10.9189 2015-01-01 13.3412