Year Dollars 1992-01-01 4655882 1997-01-01 8608477 2002-01-01 8893679 2003-01-01 9526283 2004-01-01 9991532 2005-01-01 13565917 2006-01-01 12358791 2007-01-01 31693656 2008-01-01 12942066 2009-01-01 19251559 2010-01-01 12338634 2011-01-01 12640093 2012-01-01 17153008 2013-01-01 13833512 2014-01-01 18071056