Year Number 2007-01-01 24831494.36 2008-01-01 26151794.40 2009-01-01 27933613.59 2010-01-01 29489196.74 2011-01-01 30651814.18 2012-01-01 33194448.00 2013-01-01 34472118.00 2014-01-01 38053131.00