Year Dollars 1992-01-01 351839 1997-01-01 1289237 2002-01-01 2722034 2003-01-01 1844537 2004-01-01 2156422 2005-01-01 2346146 2006-01-01 2766146 2007-01-01 5434692 2008-01-01 5086974 2009-01-01 4604325 2010-01-01 7653401 2011-01-01 6619677 2012-01-01 5359695 2013-01-01 5704306 2014-01-01 5446830 2015-01-01 7159585 2016-01-01 5134420