Year Dollars 1997-01-01 2853538 2002-01-01 3009314 2003-01-01 2816841 2004-01-01 5858664 2005-01-01 4970673 2006-01-01 2947669 2007-01-01 6857243 2008-01-01 5331133 2009-01-01 4684020 2010-01-01 4178422 2011-01-01 6067483 2012-01-01 7121799 2013-01-01 5967116 2014-01-01 7371044 2015-01-01 8508022 2016-01-01 8634351