Year	current US$
1970	7300000.041723255
1971	11399999.663233763
1972	19870000.30279164
1973	3200000.122189522
1974	16249999.999999993
1975	-869999.9451637263
1976	5600000.023841852
1977	-3899999.856948849
1978	-100000.14305114979
1979	10100000.202655789
1980	47450000.46491628
1981	67690002.11358067
1982	44220000.684261315
1983	46499999.10593033
1984	28409999.84741211
1985	40120000.6008148
1986	109839996.45709991
1987	85320002.07901007
1988	75080000.28133388
1989	71759999.15599814
1990	158210000.03814697
1991	224439999.3419647
1992	194699999.77946284
1993	467630006.81996375
1994	421960008.3529951
1995	438590014.9345404
1996	471529991.3883207
1997	328429999.5899196
1998	256710002.24351907
1999	300949996.5310099
2000	254409998.65531948
2001	245630003.45230067
2002	241670003.4290554
2003	304290004.8494343
2004	320130003.45230114
2005	90209999.08447266
2006	94679998.39782716
2007	217909994.1253661
2008	342929989.3379213
2009	204519995.2125555
2010	469350001.3351443
2011	867230015.516281
2012	202500003.8146975
2013	458850004.19616634
2014	896360012.0544431
2015	394160011.7683409
2016	448549997.8065487
2017	597740007.4005129
2018	611690011.0244756
2019	-14409999.370574713
2020	653969993.5913091
2021	703530002.5939939
2022	673540016.1743159