Year	US Dollars
2000-01-01	14316800000
2001-01-01	9353400000
2002-01-01	11873100000
2003-01-01	28047900000
2004-01-01	51926000000
2005-01-01	90088500000
2006-01-01	99130600000
2007-01-01	93413700000
2008-01-01	132322000000
2009-01-01	20954600000
2010-01-01	66750900000
2011-01-01	158582400000
2012-01-01	164763500000
2013-01-01	135442300000
2014-01-01	73758300000
2015-01-01	-56723900000
2016-01-01	-23870000000
2017-01-01	18225600000
2018-01-01	40413100000
2019-01-01	26980100000