Year Dollars 1992-01-01 482297 1997-01-01 24807 2004-01-01 25793 2005-01-01 333794 2006-01-01 1401978 2007-01-01 1617733 2010-01-01 294638 2011-01-01 75451 2012-01-01 128162 2013-01-01 243937 2014-01-01 144258 2015-01-01 301250 2016-01-01 1455128