Year	current US$
1986	179561121.019099
1987	200330986.854959
1988	206675919.0022
1989	301942282.824405
1990	442939185.783323
1991	501386327.123919
1992	545050980.782858
1993	667541922.322481
1994	630266559.916997
1995	642268312.204232
1996	496440570.411156
1997	531813478.445791
1998	345131838.322506
1999	381474488.173306
2000	339357826.173693
2001	284207477.409344
2002	217263947.67836
2003	462907056.096934
2004	276170345.020921
2005	145144122.014443
2006	-190278216.775023
2007	-604485161.897809
2008	-96492880.3483048
2009	-855342156.633328
2010	-71854341.2081397
2011	-278227801.618723
2012	-168648648.916683
2013	-1361545607.45187
2014	-1046127502.9457
2015	-1328333655.98645
2016	-759481620.23967
2017	256051853.640011
2018	-239607857.88305
2019	-347332039.53889
2020	-1055322589.29161
2021	-1465063571.69375