Year Dollars 1997-01-01 170853 2002-01-01 831978 2003-01-01 2984751 2004-01-01 3488182 2005-01-01 2558188 2006-01-01 1555354 2007-01-01 1245873 2008-01-01 1520882 2009-01-01 1434453 2010-01-01 860898 2011-01-01 2559145 2012-01-01 999992 2013-01-01 1681492 2014-01-01 673541 2015-01-01 596021 2016-01-01 1656325