Year	current US$
1968	266666666.66666666
1969	277777777.7777778
1970	263636363.63636366
1971	186666666.66666666
1972	242857142.85714287
1973	-57142857.14285714
1974	1100000000
1975	1192857142.857143
1976	1206250000
1977	850000000
1978	-1237500000
1979	-961290322.5806451
1980	1557894736.8421052
1981	1948648648.6486487
1982	1181595092.02454
1983	946222222.2222222
1984	1070027247.9564034
1985	840613026.8199234
1986	1294666666.6666665
1987	802100350.058343
1988	-877144866.3853726
1989	717247879.3590951
1990	2530203142.966654
1991	-1476414189.8370085
1992	582101280.5587894
1993	1968092853.8916705
1994	-4100651828.835827
1995	2773447486.094449
1996	-978516061.6669737
1997	-2485465380.436572
1998	1183449548.1812184
1999	3739833278.810267
2000	4133214601.603598
2001	151564636.7294719
2002	3923012142.837239
2003	5129428836.986178
2004	-803122402.2947142
2005	1991115174.8719654
2006	4890244831.2965145
2007	4863637138.113991
2008	16083019034.637907
2009	3810940024.2586904
2010	16448826728.433794
2011	27338385389.458225
2012	8932759391.559359
2013	12192579400.431145
2014	2081915905.6577392
2015	-11714600172.278841
2016	-9467626513.384336
2017	7190361754.903124
2018	-2404819721.769459
2019	-8367625632.752825
2020	27505266468.862206
2021	26498119849.389996
2022	53311499656.16966
2023	-32855318765.65491