Year	current US$
1981	72128721659.47083
1982	64321750000.97935
1983	57055282037.81019
1984	45139805091.07079
1985	41483915555.04211
1986	41168875246.60974
1987	47087926786.74014
1988	51217921470.687065
1989	51281045907.959015
1990	60473236598.334564
1991	63919044341.25105
1992	59916237278.616905
1993	59574925217.64474
1994	64686933203.59058
1995	83377135115.60649
1996	89147149349.05289
1997	94125999191.41394
1998	90045142775.0687
1999	57765696172.89004
2000	59422597885.87146
2001	56749109548.75682
2002	57986875022.30095
2003	75004972256.53929
2004	90885433175.24736
2005	102189965818.86177
2006	108713683230.67168
2007	122830410915.816
2008	132730341117.0603
2009	130306121315.16383
2010	143904318384.00476
2011	160376682017.1771
2012	164102125895.3914
2013	181169601276.92142
2014	191489190659.0474
2015	170910221182.35596
2016	156472983106.55353
2017	168163297920.79977
2018	189260809373.49463
2019	201768920782.55896
2020	190028268384.7638
2021	223279185354.439
2022	234851926546.42175
2023	227250978351.4719