Year Dollars 1997-01-01 320036 2002-01-01 632063 2003-01-01 722923 2004-01-01 563605 2005-01-01 1439387 2006-01-01 561608 2007-01-01 3367934 2008-01-01 858884 2009-01-01 1069868 2010-01-01 1780801 2011-01-01 903812 2012-01-01 570481 2013-01-01 1034835 2014-01-01 4125903 2015-01-01 1179494 2016-01-01 660155