Year Dollars 1992-01-01 1685329 1997-01-01 6973587 2003-01-01 5126613 2004-01-01 3833602 2005-01-01 1899466 2006-01-01 1621681 2007-01-01 1472370 2008-01-01 6435012 2009-01-01 3128058 2010-01-01 1434700 2011-01-01 2207043 2012-01-01 1573523 2013-01-01 1144230 2014-01-01 809920 2015-01-01 585962