Year Dollars 1992-01-01 8036309 1997-01-01 25063759 2002-01-01 6375091 2003-01-01 6452919 2004-01-01 20171805 2005-01-01 6154259 2006-01-01 6282545 2007-01-01 8194908 2008-01-01 5936616 2009-01-01 4477182 2010-01-01 6471725 2011-01-01 5354439 2012-01-01 8421821 2013-01-01 14067426 2014-01-01 12805363 2015-01-01 20726445 2016-01-01 6780823