Year Dollars 1992-01-01 11504120 1997-01-01 10747403 2002-01-01 10378882 2003-01-01 10059783 2004-01-01 15782589 2005-01-01 27087610 2006-01-01 31425412 2007-01-01 24768809 2008-01-01 35716338 2009-01-01 22924815 2010-01-01 14226433 2011-01-01 17289253 2012-01-01 23037483 2013-01-01 23266127 2014-01-01 22832711 2015-01-01 27356671 2016-01-01 33009495