Year	current US$
1977	5122809823.453097
1978	5340943244.026778
1979	6002735146.404617
1980	8862580475.591053
1981	8750994297.052748
1982	7073745763.9615555
1983	5973346482.833809
1984	5040807616.716144
1985	5481163582.110617
1986	5045440814.352119
1987	5115166081.195328
1988	5358810497.041313
1989	6332990230.196742
1990	7880212930.422656
1991	8992580919.897268
1992	8627532969.457378
1993	10017526607.813377
1994	10096001021.682999
1995	8325942381.523181
1996	9863999011.888624
1997	9553152591.214523
1998	8739549895.6063
1999	10875230401.635036
2000	10669704256.897663
2001	12201240819.862354
2002	12650023718.580914
2003	15280400198.03886
2004	18785002152.18558
2005	22574936440.729603
2006	31112868772.002277
2007	37201317883.25927
2008	46812404988.20712
2009	36983233450.568726
2010	42711479243.31171
2011	47990417492.515915
2012	48508831021.91496
2013	46113220131.53531
2014	50139020829.87076
2015	44247687466.14683
2016	36190658963.425156
2017	47071321865.80781
2018	62978975951.10041
2019	70162056374.21571
2020	43633638254.32396
2021	45807638062.49818
2022	54075913666.00939
2023	51111702569.1767