Year	current US$
1970	-79939520.36287782
1971	-370328377.6697515
1972	131447132.7524969
1973	-86544798.64025807
1974	-728017762.6947308
1975	-1901509498.9381852
1976	-3003940254.7420506
1977	-3777589931.436085
1978	68099879.82374148
1979	1118263857.3487885
1980	3719023323.6151605
1981	4442198797.8046875
1982	3051440966.8422685
1983	4676826928.348227
1984	5298903387.857624
1985	4588935932.629228
1986	-2846903863.577968
1987	-2278144712.4304266
1988	-862053091.913457
1989	3308422043.594757
1990	7269996964.71077
1991	9249564238.226719
1992	8479684608.576715
1993	7399247261.809109
1994	7441623214.690546
1995	9027812855.15848
1996	14166175695.3704
1997	12776741029.773518
1998	2909570449.6958294
1999	11799543542.92748
2000	28998613919.880024
2001	29293125882.758545
2002	26293243818.732937
2003	29874862292.02565
2004	35939502729.64633
2005	50881955762.51455
2006	60414295292.59508
2007	56261664704.77848
2008	82062234042.55319
2009	47162349124.564674
2010	51989797325.2447
2011	68805712674.04355
2012	72176364417.7052
2013	61805787234.04256
2014	51769002909.283226
2015	26078578071.716427
2016	10236547619.047619
2017	17499012693.935112
2018	28317368582.846603
2019	9752727272.727272
2020	-3431135498.716702
2021	74749592549.47614
2022	168113478373.9273
2023	71414862732.72348