Year Dollars 1992-01-01 5205432 1997-01-01 1673205 2002-01-01 3699431 2003-01-01 3652710 2004-01-01 4883461 2005-01-01 4906263 2006-01-01 5169743 2007-01-01 14813162 2008-01-01 17690520 2009-01-01 26011339 2010-01-01 13474541 2011-01-01 17846842 2012-01-01 30682059 2013-01-01 50147334 2014-01-01 33822176 2015-01-01 23870332 2016-01-01 23318141