Year Dollars 1992-01-01 10360553 1997-01-01 14677284 2002-01-01 17775099 2003-01-01 19588762 2004-01-01 15575196 2005-01-01 16515919 2006-01-01 24027446 2007-01-01 29460866 2008-01-01 55490469 2009-01-01 18758590 2010-01-01 20638515 2011-01-01 26916299 2012-01-01 25791471 2013-01-01 27944509 2014-01-01 46060400 2015-01-01 30434688 2016-01-01 24741960