Year Dollars 1997-01-01 186824 2002-01-01 715864 2003-01-01 1130105 2004-01-01 135588 2006-01-01 639187 2008-01-01 13150165 2009-01-01 8706402 2011-01-01 3379883 2013-01-01 6126847 2016-01-01 6432108