Year Dollars 1992-01-01 1028178 1997-01-01 3697904 2002-01-01 6596038 2003-01-01 10659336 2004-01-01 6424170 2005-01-01 7491660 2006-01-01 6884980 2007-01-01 6218951 2008-01-01 11938452 2009-01-01 12399978 2010-01-01 6981567 2011-01-01 8695321 2012-01-01 9110986 2013-01-01 5865084 2014-01-01 5352028 2015-01-01 4645688 2016-01-01 5910423