Year Dollars 1997-01-01 170358 2002-01-01 69698 2003-01-01 32672 2005-01-01 111472 2007-01-01 359913 2008-01-01 359399 2009-01-01 862403 2010-01-01 555005 2011-01-01 1218810 2012-01-01 3184560 2013-01-01 1929759 2014-01-01 3175529 2015-01-01 4440520 2016-01-01 3094870