Year Dollars 1992-01-01 313103 1997-01-01 922294 2002-01-01 307181 2004-01-01 1653851 2005-01-01 2182239 2006-01-01 3606783 2007-01-01 7251874 2008-01-01 5681696 2009-01-01 11895704 2010-01-01 7182542 2011-01-01 9058668 2012-01-01 5942068 2013-01-01 5113447 2014-01-01 3753192 2015-01-01 5050033 2016-01-01 3142908