Year	current US$
1970	2454150061.111111
1971	6099709613.699416
1972	6834642808.961894
1973	-231313285.8572471
1974	-3967665539.701968
1975	-316462115.1497283
1976	3911996799.892093
1977	10673368053.331347
1978	16145734414.80467
1979	-10178503568.495028
1980	-10762068405.862553
1981	7475883734.06948
1982	6219770857.731775
1983	19079902169.02999
1984	32246208253.954887
1985	44629778842.421135
1986	76375001631.85573
1987	70124276207.76079
1988	60323819348.47528
1989	41293261160.12536
1990	24355543277.448765
1991	53732293939.3512
1992	80350537262.54684
1993	95479406966.68459
1994	93444922990.22188
1995	68922257802.4997
1996	18591806698.161686
1997	44200018348.487366
1998	71492903648.66815
1999	68865072146.7024
2000	67799063707.772896
2001	25985588613.078865
2002	52861517848.597946
2003	72560562736.3963
2004	93369256791.10478
2005	67729286088.867355
2006	59746705268.21744
2007	80680404404.11537
2008	17444937330.385693
2009	23747970772.71479
2010	77087145544.46562
2011	-40268387502.22061
2012	-102952163351.7227
2013	-125640835016.62816
2014	-127034100865.03142
2015	-24619967678.36885
2016	40314211663.73839
2017	37457827821.08275
2018	1006129335.0089977
2019	-14809695880.25514
2020	-13587503404.453848
2021	-26206712404.409256
2022	-160053213900.7757