Year Dollars 1997-01-01 3788064 2002-01-01 3941971 2003-01-01 3268166 2005-01-01 1567194 2006-01-01 41409324 2007-01-01 42270160 2008-01-01 21981433 2009-01-01 9350385 2010-01-01 10527644 2011-01-01 16728761 2012-01-01 10436606 2013-01-01 53231262 2014-01-01 18509546 2015-01-01 19800122 2016-01-01 8256280