Year Dollars 1997-01-01 808665 2002-01-01 2776033 2003-01-01 553810 2004-01-01 868554 2005-01-01 502616 2006-01-01 968737 2007-01-01 291085 2008-01-01 628345 2009-01-01 279106 2010-01-01 502697 2011-01-01 1411477 2013-01-01 3647881 2014-01-01 4974978 2016-01-01 2417802