Year Dollars 1997-01-01 506637 2002-01-01 62888 2003-01-01 209473 2004-01-01 202881 2005-01-01 352245 2006-01-01 996846 2008-01-01 1424764 2010-01-01 189564 2011-01-01 299340 2012-01-01 1174088 2014-01-01 1539023 2015-01-01 691131 2016-01-01 584452