Year Dollars 1992-01-01 134303461 1997-01-01 269413565 2002-01-01 521912 2003-01-01 4055390 2004-01-01 59430194 2005-01-01 18924939 2006-01-01 2681246 2007-01-01 7652504 2008-01-01 33994467 2009-01-01 11705974 2010-01-01 5677230 2011-01-01 13910859 2012-01-01 11541454 2013-01-01 10228386 2014-01-01 19117609 2015-01-01 16850818 2016-01-01 13607318