Year	current US$
1970	-190948471.1211778
1971	-288914464.3364592
1972	-71366504.15830226
1973	-252992064.72693324
1974	-957450764.1405388
1975	-1787619201.5516405
1976	-692414217.5719341
1977	439722591.11701345
1978	1122021660.6498194
1979	464051289.8794077
1980	-698119222.1868027
1981	512537889.225682
1982	91279141.4826693
1983	-5337318.531169941
1984	1254451919.271864
1985	374136607.828089
1986	964109781.8437719
1987	474773434.32977146
1988	-378109452.7363184
1989	-2175419149.2309823
1990	-2190950085.523247
1991	-1213056903.3965592
1992	953013007.6984339
1993	4101176225.668783
1994	5829254410.927718
1995	10005446623.093681
1996	9139269997.411339
1997	9307066773.565456
1998	10603026257.231865
1999	12131733306.177633
2000	11552545763.13728
2001	11983523078.740171
2002	12595042023.529434
2003	11304816959.215662
2004	12383047561.776094
2005	8128885839.688712
2006	9041567128.235281
2007	12291817533.725529
2008	10330586412.499998
2009	5167668873.046871
2010	3403114683.3333397
2011	-2146395000.0000043
2012	-4013679810.937501
2013	-2872719318.8235373
2014	-3160503365.882342
2015	-1333634494.5312493
2016	-3076083750.5836654
2017	117486842.35294138
2018	-3459015759.215684
2019	418683466.666666
2020	207879691.82879436
2021	99350186.04651003
2022	-6744776527.23738
2023	-1256434145.0980613