Year Dollars 1992-01-01 177099852 1997-01-01 431266274 2002-01-01 336605145 2003-01-01 314470464 2004-01-01 669081527 2005-01-01 920702393 2006-01-01 1211730172 2007-01-01 1311148633 2008-01-01 2610248344 2009-01-01 1827921620 2010-01-01 2765880941 2011-01-01 3409340667 2012-01-01 4180634871 2013-01-01 4497122732 2014-01-01 3913710286 2015-01-01 2951842825 2016-01-01 2659819020