Year Dollars 1992-01-01 1420839 1997-01-01 2897073 2002-01-01 3283518 2003-01-01 4480138 2004-01-01 5781527 2005-01-01 14794256 2006-01-01 9053928 2007-01-01 7197199 2008-01-01 6449271 2009-01-01 4374867 2010-01-01 4226209 2011-01-01 1807553 2012-01-01 3964318 2013-01-01 3698335 2014-01-01 4388975 2015-01-01 4446719 2016-01-01 4749560