Year Dollars 1992-01-01 3646556 1997-01-01 21341688 2002-01-01 8850163 2003-01-01 14236063 2004-01-01 12482501 2005-01-01 8523368 2006-01-01 9904457 2007-01-01 18917628 2008-01-01 26089613 2009-01-01 11522255 2010-01-01 20742169 2011-01-01 26225164 2012-01-01 46569761 2013-01-01 19348002 2014-01-01 26289947 2015-01-01 18334728 2016-01-01 26915102