Year Dollars 1992-01-01 4547277 1997-01-01 2443658 2002-01-01 1735706 2003-01-01 2842094 2004-01-01 4187087 2005-01-01 2213016 2006-01-01 5296462 2007-01-01 7815880 2008-01-01 14299208 2009-01-01 9585429 2010-01-01 8736679 2011-01-01 13250077 2012-01-01 9019072 2013-01-01 12908660 2014-01-01 7113823 2015-01-01 6813454 2016-01-01 6264350