Year Dollars 1992-01-01 1786510 1997-01-01 790175 2002-01-01 2687937 2003-01-01 2444151 2004-01-01 2151022 2005-01-01 1873787 2006-01-01 5315773 2007-01-01 2870480 2008-01-01 3569690 2009-01-01 2233395 2010-01-01 4166529 2011-01-01 6150954 2012-01-01 6239842 2013-01-01 6483905 2014-01-01 6621784 2015-01-01 4508893 2016-01-01 3162046