Year Dollars 1992-01-01 6975147 1997-01-01 23776682 2002-01-01 31432971 2003-01-01 27436908 2004-01-01 33617012 2005-01-01 32630725 2006-01-01 43579085 2007-01-01 40554584 2008-01-01 51060962 2009-01-01 46094012 2010-01-01 43727528 2011-01-01 39450400 2012-01-01 33091061 2013-01-01 32193029 2014-01-01 32269263 2015-01-01 32512093 2016-01-01 21535576