Year Dollars 1997-01-01 2195903 2002-01-01 7206613 2003-01-01 2669381 2004-01-01 4730779 2005-01-01 8901435 2006-01-01 10371639 2007-01-01 16742305 2008-01-01 17436952 2009-01-01 26866164 2010-01-01 10867866 2011-01-01 12416681 2012-01-01 12805388 2013-01-01 82250112 2014-01-01 28146216 2015-01-01 10564182 2016-01-01 32437939