Year Dollars 1992-01-01 410793 1997-01-01 3401250 2002-01-01 6380886 2003-01-01 6501108 2004-01-01 9147038 2005-01-01 5797204 2006-01-01 8028439 2007-01-01 17666142 2008-01-01 22314670 2009-01-01 27963877 2010-01-01 33580316 2011-01-01 23739833 2012-01-01 31002126 2013-01-01 27616060 2014-01-01 40373707 2015-01-01 36595299 2016-01-01 35900961