Year Dollars 1997-01-01 175906 2002-01-01 763152 2003-01-01 910722 2004-01-01 503041 2005-01-01 534495 2006-01-01 590041 2007-01-01 714626 2008-01-01 939646 2009-01-01 1237228 2010-01-01 973328 2011-01-01 1218056 2012-01-01 1010939 2013-01-01 1687586 2014-01-01 3794755 2015-01-01 4899943 2016-01-01 7163090