Year	current US$
1970	157489999.3389845
1971	177039999.51854342
1972	220820000.43615702
1973	71400000.31702222
1974	27910000.251606114
1975	24770000.183954872
1976	98430001.43580142
1977	62199998.74010677
1978	160519998.26915532
1979	563399983.838201
1980	711780012.9242239
1981	534500002.56300014
1982	539159998.0201573
1983	321690000.92893845
1984	206019999.86544248
1985	140990002.12550163
1986	307340002.6075543
1987	394100001.85668457
1988	305600004.34704137
1989	180249996.68076628
1990	2662169984.0296073
1991	5828199992.1649685
1992	5155439941.886814
1993	5137849976.610398
1994	5663929974.034434
1995	8269790107.8984165
1996	5205299979.982899
1997	3818999992.3184524
1998	4729739988.956599
1999	7129159953.041002
2000	7421140003.971753
2001	6850350001.6555195
2002	7808289962.666111
2003	7292929954.545573
2004	8110979999.838402
2005	3981550020.2849503
2006	4829959999.42161
2007	4449100027.788431
2008	5857510009.529071
2009	6328930000.586437
2010	5510779981.063679
2011	8735489910.578365
2012	8098310106.649999
2013	7360209971.589968
2014	8555290043.219929
2015	6596450042.951848
2016	8079389856.4763365
2017	7686609922.455625
2018	6150730004.858226
2019	5493280013.438312
2020	8074440006.392077
2021	8651819994.565102
2022	33431129925.82657