Year Dollars 1992-01-01 374938 1997-01-01 3922561 2002-01-01 1671827 2003-01-01 1534964 2004-01-01 2103497 2005-01-01 1798462 2006-01-01 2908131 2007-01-01 7193081 2008-01-01 6188899 2009-01-01 10880245 2010-01-01 15293555 2011-01-01 12164468 2012-01-01 11624198 2013-01-01 10468909 2014-01-01 22994129 2015-01-01 18563886 2016-01-01 24435696