Year	current US$
1990	550000000
1991	566666666.6666666
1992	262499999.99999997
1993	79423393.73970346
1994	0
1995	0
1996	31887350.988079045
1997	-21804238.921001926
1998	58431649.634448275
1999	6871614.315908437
2000	34669719.200607136
2001	99572603.60141765
2002	136388035.56992725
2003	69582643.95404656
2004	144824707.8464107
2005	291227053.9396196
2006	272742641.81802964
2007	719787942.713883
2008	723105570.7301891
2009	-185993665.32035267
2010	284457191.7174145
2011	509103199.23865765
2012	750700375.1079481
2013	571437159.948297
2014	755974937.5165305
2015	450174543.9867592
2016	448003042.17853785
2017	-1753307.974124362
2018	560978496.7449201
2019	565373155.5051079
2020	379908029.7134772
2021	-14933714.179266665
2022	1078458267.6085317
2023	1367451116.9331286