Year Dollars 1997-01-01 8983465 2008-01-01 3042662 2009-01-01 443967 2010-01-01 344756 2011-01-01 705463 2012-01-01 557668 2013-01-01 1127563 2014-01-01 413744 2015-01-01 627326 2016-01-01 467116