Year Dollars 1992-01-01 359358 1997-01-01 1024031 2002-01-01 1154965 2003-01-01 11589797 2004-01-01 7439797 2005-01-01 4642466 2006-01-01 4038496 2007-01-01 4725418 2008-01-01 8000776 2009-01-01 7314090 2010-01-01 5688845 2011-01-01 8308354 2012-01-01 11997147 2013-01-01 14929133 2014-01-01 12904452 2015-01-01 18942734