Year Dollars 1992-01-01 172418 1997-01-01 88620 2002-01-01 315691 2003-01-01 587427 2004-01-01 633588 2005-01-01 1841081 2006-01-01 1320963 2007-01-01 687049 2008-01-01 945644 2009-01-01 400864 2010-01-01 1255613 2011-01-01 1167305 2012-01-01 1624238 2013-01-01 1473187 2014-01-01 1059304 2015-01-01 598665 2016-01-01 926227