Year Dollars 1997-01-01 5252887 2002-01-01 1577067 2003-01-01 1989901 2004-01-01 1421619 2005-01-01 1890003 2006-01-01 1758771 2007-01-01 2156239 2008-01-01 1530791 2009-01-01 4413635 2010-01-01 3745312 2011-01-01 4598919 2012-01-01 5059428 2013-01-01 5681256 2014-01-01 5771694 2015-01-01 4381442 2016-01-01 3814114