Year Dollars 1997-01-01 2458268 2002-01-01 13964266 2003-01-01 4051967 2004-01-01 3281019 2008-01-01 5219279 2010-01-01 701445 2011-01-01 662382 2012-01-01 599268 2014-01-01 300473 2015-01-01 491688 2016-01-01 723944