Year Dollars 1992-01-01 3923963 1997-01-01 8407428 2002-01-01 10117831 2003-01-01 10815197 2004-01-01 14449128 2005-01-01 14134231 2006-01-01 19041255 2007-01-01 24073590 2008-01-01 59069300 2009-01-01 20439501 2010-01-01 14655808 2011-01-01 14944562 2012-01-01 16951399 2013-01-01 12997053 2014-01-01 11763849 2015-01-01 11436697 2016-01-01 11568901