Year Dollars 1992-01-01 2281795 1997-01-01 4366797 2002-01-01 7349591 2003-01-01 4085564 2004-01-01 4110434 2005-01-01 4243795 2006-01-01 7341018 2007-01-01 8772396 2008-01-01 13152754 2009-01-01 9412617 2010-01-01 11856595 2011-01-01 24760248 2012-01-01 26363572 2013-01-01 20530884 2014-01-01 20695126 2015-01-01 13163163 2016-01-01 15422457