Year Dollars 1997-01-01 13889404 2002-01-01 1758461 2003-01-01 1518407 2004-01-01 3299958 2005-01-01 2476692 2007-01-01 4703452 2008-01-01 2240331 2009-01-01 5108326 2010-01-01 7619764 2011-01-01 4706015 2012-01-01 3279749 2013-01-01 2430029 2014-01-01 5412936 2015-01-01 5723678 2016-01-01 2807436