Year	current US$
1980	4039019.0838043084
1981	60050017.394291125
1982	20651159.76652943
1983	-5806106.118694189
1984	-27471145.915676687
1985	6915415.897613643
1986	14680431.366169056
1987	-2819357.590575951
1988	17482821.913699813
1989	10624479.566522656
1990	621828536.232581
1991	628935831.830425
1992	644960933.67549
1993	-96850062.71586438
1994	325943001.5110859
1995	491665434.01273197
1996	346264980.1332309
1997	355177870.5007327
1998	165522836.67104232
1999	255310248.30860224
2000	342437023.7602611
2001	322656511.4375326
2002	394381264.98468083
2003	526819599.761193
2004	702096879.7059606
2005	342274992.3796827
2006	93678260.1634807
2007	107297532.84632677
2008	15542315.042023348
2009	-130430024.6954808
2010	-97433654.77033928
2011	-91587389.5202506
2012	-100352021.00795093
2013	130237616.31431086
2014	-60950143.39492721
2015	4721976.840554025
2016	-132938328.63868494
2017	-8473164.22309738
2018	92808225.27092251
2019	57995154.974156454
2020	0