Year Dollars 1997-01-01 276499 2002-01-01 375480 2003-01-01 261831 2004-01-01 475321 2005-01-01 487165 2006-01-01 706256 2007-01-01 426872 2009-01-01 1663589 2010-01-01 2517646 2011-01-01 585861 2012-01-01 1262801 2013-01-01 542160 2014-01-01 493981 2015-01-01 495256 2016-01-01 756837