Year Dollars 1992-01-01 31869276 1997-01-01 164136125 2002-01-01 391386578 2003-01-01 609411894 2004-01-01 777696866 2005-01-01 931875323 2006-01-01 1002739749 2007-01-01 1460334529 2008-01-01 1924009329 2009-01-01 1655410082 2010-01-01 2148131314 2011-01-01 2669706713 2012-01-01 3035556122 2013-01-01 2861080514 2014-01-01 2679910373 2015-01-01 2448826277 2016-01-01 2303898227