Year Dollars 1992-01-01 583835 1997-01-01 1845961 2002-01-01 1216226 2003-01-01 1337061 2004-01-01 1192694 2005-01-01 752384 2006-01-01 3347212 2007-01-01 13089099 2008-01-01 16287904 2009-01-01 20918997 2010-01-01 4450416 2011-01-01 22943362 2012-01-01 8631324 2013-01-01 13303962 2014-01-01 39192606 2015-01-01 16368238 2016-01-01 17522672