Year Dollars 1992-01-01 124915495 1997-01-01 215959131 2002-01-01 290838461 2003-01-01 272315802 2004-01-01 333625277 2005-01-01 381181860 2006-01-01 325918684 2007-01-01 450300546 2008-01-01 480323535 2009-01-01 373377957 2010-01-01 330145806 2011-01-01 369673878 2012-01-01 325568791 2013-01-01 301940072 2014-01-01 350860862 2015-01-01 329643641 2016-01-01 327714691