Year Dollars 1992-01-01 3104820 1997-01-01 3482641 2002-01-01 26645586 2003-01-01 7355483 2004-01-01 9555473 2005-01-01 16774066 2006-01-01 17216947 2007-01-01 20278914 2008-01-01 20186103 2009-01-01 12472965 2010-01-01 12596132 2011-01-01 13600062 2012-01-01 11866494 2013-01-01 11342218 2014-01-01 10134978 2015-01-01 11355230 2016-01-01 16401777