Year Dollars 1997-01-01 75024 2004-01-01 81145 2005-01-01 37528 2007-01-01 581995 2008-01-01 77286 2009-01-01 160607 2010-01-01 144112 2011-01-01 155061 2012-01-01 507113 2013-01-01 2270646 2014-01-01 842960 2015-01-01 750372 2016-01-01 1684984