Year Dollars 1992-01-01 574440 2002-01-01 4818887 2003-01-01 7068284 2004-01-01 3509336 2005-01-01 7201067 2006-01-01 20448313 2007-01-01 35398114 2008-01-01 4824111 2009-01-01 8419924 2010-01-01 45870475 2011-01-01 17688231 2012-01-01 9495414 2013-01-01 5583536 2014-01-01 7260356 2015-01-01 26671575 2016-01-01 3772348