Year Dollars 1992-01-01 21987942 1997-01-01 79078017 2002-01-01 68905548 2003-01-01 55141502 2004-01-01 60993962 2005-01-01 77227528 2006-01-01 60914336 2007-01-01 116295269 2008-01-01 75052031 2009-01-01 124406933 2010-01-01 106523878 2011-01-01 137864947 2012-01-01 136967596 2013-01-01 110559278 2014-01-01 130952839 2015-01-01 122726926 2016-01-01 89771482