Year Dollars 1997-01-01 364138 2002-01-01 1557620 2003-01-01 1502661 2004-01-01 2821167 2005-01-01 1494188 2006-01-01 1042319 2007-01-01 3826285 2008-01-01 3795508 2009-01-01 1857359 2010-01-01 2335710 2011-01-01 4358864 2012-01-01 1320047 2014-01-01 2009144 2015-01-01 1548692 2016-01-01 1536506