Year Dollars 1997-01-01 237039 2003-01-01 17883433 2004-01-01 1986247 2006-01-01 5342986 2007-01-01 14377022 2008-01-01 10164146 2011-01-01 7879350 2012-01-01 5033993 2013-01-01 5163969 2014-01-01 3103741 2015-01-01 3736887 2016-01-01 1836586