Year Dollars 1992-01-01 3013550 1997-01-01 3833437 2002-01-01 9144621 2003-01-01 10051490 2004-01-01 9353686 2005-01-01 7759129 2006-01-01 9162285 2007-01-01 12580557 2008-01-01 21163371 2009-01-01 14439055 2010-01-01 13595574 2011-01-01 14211755 2012-01-01 18068884 2013-01-01 13636087 2014-01-01 11963453 2015-01-01 11844163 2016-01-01 12054606