Year Dollars 1992-01-01 12819766 1997-01-01 7027127 2002-01-01 9373193 2003-01-01 12750081 2004-01-01 8428573 2005-01-01 10609627 2006-01-01 8988849 2007-01-01 10569657 2008-01-01 11198426 2009-01-01 14114027 2010-01-01 10645218 2011-01-01 32339870 2012-01-01 17461335 2013-01-01 16547665 2014-01-01 18291125 2015-01-01 25500643 2016-01-01 41772928