Year	U.S. Dollars
2000-01-01	365946100000
2001-01-01	334322900000
2002-01-01	129777800000
2003-01-01	152973300000
2004-01-01	186857100000
2005-01-01	228179700000
2006-01-01	270333000000
2007-01-01	351768500000
2008-01-01	406212200000
2009-01-01	410556900000
2010-01-01	482384200000
2011-01-01	577214300000
2012-01-01	389198500000
2013-01-01	396408100000
2014-01-01	423408900000
2015-01-01	375404400000
2016-01-01	404446800000
2017-01-01	431919800000
2018-01-01	418875300000
2019-01-01	413114000000