Year Dollars 1992-01-01 2742831 1997-01-01 2538949 2002-01-01 7692459 2003-01-01 3592576 2004-01-01 11275016 2005-01-01 17765329 2006-01-01 20753791 2007-01-01 9059118 2008-01-01 10089561 2009-01-01 5990252 2010-01-01 7309517 2011-01-01 12226075 2012-01-01 13822447 2013-01-01 15958378 2014-01-01 33072361 2015-01-01 26949862 2016-01-01 26779467