Year	current US$
1960	17784858.778497737
1961	-61258870.188460015
1962	-73115429.53350368
1963	-57306683.740112126
1964	9880387.077140752
1965	37545771.25930493
1966	-11856559.345043663
1967	-69163262.84608804
1968	-51378423.82852254
1969	-16599183.083061127
1970	-155973038.18404937
1971	-120793059.9040507
1972	-32929055.816379763
1973	-79232105.99863012
1974	-48812671.24768895
1975	-976930956.2251526
1976	-1803221858.968093
1977	-2256944058.928628
1978	-1813126114.3488414
1979	-2045402902.2854817
1980	-1883905741.0800965
1981	-2151238057.52803
1982	-2146213312.8519204
1983	-1154613564.8739343
1984	-1348202878.9167876
1985	-1242570803.935208
1986	-1268123845.48114
1987	-1021875831.7906265
1988	-37146581.23302189
1989	-1379125300.2708476
1990	-1662325914.163717
1991	-1660046700.4726326
1992	-1995360541.1103303
1993	-1755914442.4131627
1994	-1935637020.5367808
1995	-2485677025.761124
1996	-1477676770.5277128
1997	-1292630082.9222212
1998	-1668096217.4066596
1999	-1531205000.5206838
2000	-2170940438.546959
2001	-1183660487.6149864
2002	-1139912203.9742322
2003	-1728628058.8524594
2004	-3208669863.8489304
2005	-3788292813.7233496
2006	-4108550666.8517594
2007	-7385441973.61118
2008	-13124997983.955511
2009	-11062913455.213413
2010	-10050304390.15164
2011	-14219008328.311625
2012	-15001080727.755697
2013	-15452612954.559298
2014	-13852049947.557419
2015	-8056861553.889722
2016	-10770661075.285833
2017	-10621752088.681818
2018	-12222219617.89889
2019	-10071252426.413183
2020	-8804922307.37212
2021	-13138811839.682865
2022	-15050498688.077349
2023	-11716525367.275452