Year	current US$
1990	-47078616.7969306
1991	-400525504.498077
1992	-265980527.016232
1993	-60873000.2719463
1994	-181033510.843877
1995	127555457.303471
1996	204374015.739512
1997	-116670886.828802
1998	206323382.527465
1999	183208857.058441
2000	570157764.057379
2001	773151835.910586
2002	698628599.922869
2003	961684838.325422
2004	1454081087.68784
2005	1704194721.58387
2006	1814568649.34478
2007	1403096773.44996
2008	914518071.532939
2009	782859808.108981
2010	1038404194.06155
2011	919992050.20069
2012	656707567.688973
2013	418841268.146562
2014	122778263.569694
2015	40096616.038699
2016	210601967.08109
2017	57379596.6739129
2018	61409504.6357003
2019	-206012226.465917
2020	-350484059.897765
2021	593579204.278919