Year Dollars 1992-01-01 532094 1997-01-01 612496 2004-01-01 2064036 2005-01-01 6958492 2006-01-01 3461220 2007-01-01 4594731 2008-01-01 3676471 2009-01-01 2974032 2010-01-01 2034572 2011-01-01 2333618 2012-01-01 5159582 2013-01-01 5284383 2014-01-01 5094441 2015-01-01 4329669 2016-01-01 6942010