Year Dollars 1992-01-01 100401472 1997-01-01 299073688 2002-01-01 333573685 2003-01-01 372035674 2004-01-01 318651585 2005-01-01 323522302 2006-01-01 245933214 2007-01-01 280631236 2008-01-01 340276345 2009-01-01 297889747 2010-01-01 384233372 2011-01-01 421548740 2012-01-01 479375383 2013-01-01 386730516 2014-01-01 467038855 2015-01-01 358105447 2016-01-01 422792712