Year	current US$
1990	428360304.489307
1991	1328748402.38548
1992	1916244307.31855
1993	383649482.441857
1994	314955488.49916
1995	-417299223.830661
1996	-102124127.336536
1997	695498428.928413
1998	577048312.375156
1999	709261128.821117
2000	349970861.909957
2001	363451586.824148
2002	593361565.980793
2003	364542112.942561
2004	-357197790.026513
2005	-408701916.95365
2006	345031833.31286
2007	1275428984.30952
2008	2846560569.95717
2009	5469194718.37018
2010	3413597148.31764
2011	3794813127.80888
2012	5339716398.70804
2013	6749517754.34963
2014	7285264199.00823
2015	8122581162.06973
2016	9415074732.72809
2017	8553971778.53436
2018	4789868325.75168
2019	5660138724.52098
2020	6167891806.73402
2021	2779250352.21739