Year Dollars 1992-01-01 38778 1997-01-01 19940 2006-01-01 506603 2007-01-01 228489 2008-01-01 417278 2009-01-01 595430 2010-01-01 574128 2011-01-01 336987 2012-01-01 936025 2013-01-01 579899 2014-01-01 724548 2015-01-01 310221 2016-01-01 728475