Year Dollars 1997-01-01 1031465 2002-01-01 6917960 2004-01-01 1955058 2006-01-01 1958035 2007-01-01 1616216 2012-01-01 2785559 2014-01-01 7865569 2015-01-01 4801681 2016-01-01 13307105