Year	US Dollars
2000-01-01	9142300000
2001-01-01	7059800000
2002-01-01	4359200000
2003-01-01	8808000000
2004-01-01	11116200000
2005-01-01	21183000000
2006-01-01	28950000000
2007-01-01	30600000000
2008-01-01	34449500000
2009-01-01	410600000
2010-01-01	12156600000
2011-01-01	19801800000
2012-01-01	12289900000
2013-01-01	835000000
2014-01-01	-9435600000
2015-01-01	-27289600000
2016-01-01	-26473400000
2017-01-01	-21942700000
2018-01-01	-18424800000
2019-01-01	-20348100000