Year Dollars 1997-01-01 313155 2003-01-01 2099769 2004-01-01 2451383 2005-01-01 2116626 2006-01-01 6801791 2008-01-01 4440756 2012-01-01 3463268 2013-01-01 489857 2014-01-01 307672 2015-01-01 712756