Year Dollars 1997-01-01 378641 2002-01-01 870841 2003-01-01 404493 2004-01-01 558733 2005-01-01 1418660 2006-01-01 1486207 2007-01-01 1186290 2008-01-01 1524663 2009-01-01 2065674 2010-01-01 2107060 2011-01-01 2759819 2012-01-01 4197274 2013-01-01 1936630 2014-01-01 3711758 2015-01-01 3742681 2016-01-01 5456088