Year Dollars 1992-01-01 8108148 1997-01-01 10838605 2002-01-01 12860724 2003-01-01 25095334 2004-01-01 7937663 2005-01-01 10154496 2006-01-01 14302293 2007-01-01 33153341 2008-01-01 17826406 2009-01-01 28928125 2010-01-01 98365082 2011-01-01 50539143 2012-01-01 18185734 2013-01-01 34378822 2014-01-01 27374905 2015-01-01 47923195 2016-01-01 51457858