Year	US Dollars
2000-01-01	8315900000
2001-01-01	4793800000
2002-01-01	812900000
2003-01-01	2459900000
2004-01-01	7031000000
2005-01-01	17425000000
2006-01-01	28093000000
2007-01-01	29825000000
2008-01-01	37083000000
2009-01-01	9380000000
2010-01-01	14578000000
2011-01-01	3173000000
2012-01-01	23836500000
2013-01-01	9900000
2014-01-01	-19033000000
2015-01-01	-9346000000
2016-01-01	-4575000000
2017-01-01	700700000
2018-01-01	-4678400000
2019-01-01	-5132200000