Year	current US$
1970	60573412.47620114
1971	113098672.82169648
1972	-99659698.59017988
1973	299151245.3040211
1974	999724214.0099283
1975	-324147278.06641066
1976	57482462.97739673
1977	131332082.55159475
1978	-257107023.41137123
1979	470800360.6130422
1980	-31847133.757961784
1981	137374073.76571476
1982	180626365.62272397
1983	246451104.10094637
1984	576065539.7697811
1985	-78772378.51662403
1986	310519645.1204056
1987	-255648406.06623337
1988	-73429951.69082126
1989	762857311.9488667
1990	-92033705.85071416
1991	-49516092.730137296
1992	331773713.3134836
1993	791991593.3853216
1994	711887172.5990598
1995	785069075.4516472
1996	561259886.2217289
1997	515034987.07684547
1998	142112742.7759356
1999	797654263.3245108
2000	623106310.1040707
2001	789385568.3910931
2002	539208438.06989
2003	768901917.6743618
2004	1105210084.0336134
2005	774484263.8879111
2006	-171843589.90986317
2007	1183949437.7893732
2008	35847332.53672594
2009	-531575988.50646514
2010	621111823.9136083
2011	1001729566.0963981
2012	639237177.609311
2013	1512209235.4615
2014	1045267262.1187431
2015	507679701.52896667
2016	1026783383.5122952
2017	1520525315.443875
2018	1006740432.7946007
2019	519805649.3453018
2020	-259393559.47408515
2021	1222945253.9255908
2022	1038560302.6492398