Year Dollars 1992-01-01 4726089 1997-01-01 5025367 2002-01-01 2210453 2003-01-01 4250081 2004-01-01 2678038 2005-01-01 722739 2006-01-01 2419795 2007-01-01 880447 2008-01-01 1804828 2009-01-01 1225676 2010-01-01 1099235 2011-01-01 1537009 2012-01-01 1354890 2013-01-01 1536873 2014-01-01 660506 2015-01-01 419576