Year	current US$
1993	1076571960.8756404
1994	911919831.2236286
1995	352314912.83788556
1996	333671742.8087987
1997	270370403.3019582
1998	116794591.98454852
1999	118351063.82978724
2000	141876219.14509332
2001	100666514.34622492
2002	79975818.81913786
2003	126709767.23796917
2004	93081722.04888861
2005	-72708207.46032414
2006	82645931.00671597
2007	-795268996.2448616
2008	-1078401795.5388439
2009	-820067453.4628074
2010	-1256323694.6065133
2011	-1593776212.35426
2012	-2116192048.982335
2013	-2527374290.887956
2014	-1568181252.0214918
2015	1423224644.2830796
2016	597357598.4200468
2017	616030284.890468
2018	960069026.8846208
2019	1046213645.2877418
2020	881297337.2646348
2021	781777103.772709
2022	238843449.07454625