Year Dollars 1992-01-01 574123 1997-01-01 7561519 2002-01-01 975208 2003-01-01 962195 2004-01-01 343663 2005-01-01 180738 2006-01-01 719589 2007-01-01 290867 2008-01-01 1395944 2009-01-01 2587540 2010-01-01 2733833 2011-01-01 19298361 2012-01-01 11080002 2013-01-01 14684309 2014-01-01 20163553 2016-01-01 14789903