Year	current US$
1970	630556216.6627
1971	521549341.68568146
1972	398136061.44318634
1973	706927052.6206251
1974	1276964456.5590196
1975	883889112.0932102
1976	646018510.0339046
1977	367990983.3755987
1978	-756156648.7991911
1979	-882091585.8691574
1980	415654356.98088765
1981	-117083369.631501
1982	385032537.9609545
1983	-1430705553.4236062
1984	132083563.070514
1985	1127227469.4086447
1986	3395810512.93494
1987	2428942486.0853434
1988	983888292.1589688
1989	815844738.9383736
1990	2311452625.525185
1991	685804192.5681409
1992	991873843.4306862
1993	1030715665.1301786
1994	1772273860.802539
1995	4206023487.814118
1996	1763465533.815002
1997	2659117256.1992817
1998	2696054392.917258
1999	1830315929.8389578
2000	3460996614.3288875
2001	1831578010.832212
2002	1843858814.0985496
2003	1346289652.8346658
2004	5092422264.419653
2005	6581140861.466822
2006	10616843122.885254
2007	14428066943.037003
2008	15331560283.687944
2009	4433312660.019402
2010	18754446435.957523
2011	20375557777.650932
2012	18289815212.72024
2013	20491234042.553192
2014	17567098651.15048
2015	12534711170.817396
2016	9896785714.285713
2017	12841789240.378798
2018	17383215493.390717
2019	12199431818.181818
2020	14394902203.734848
2021	10783119906.868452
2022	11907740313.773075
2023	11881476806.563622