Year	current US$
1976	2303041879.9330335
1977	2531544207.048621
1978	2978275010.6350183
1979	3600495259.879578
1980	4494621759.826898
1981	4630167624.810311
1982	4230403001.088772
1983	3946798160.5071282
1984	3802677557.8260865
1985	3705303395.6364245
1986	3667101223.938
1987	4396604768.164774
1988	4667596004.581604
1989	5402620241.378038
1990	6298314013.929693
1991	5966461898.922478
1992	6378623624.834774
1993	6849634924.345732
1994	7769651808.812424
1995	9290411001.11529
1996	10025385702.521574
1997	10823372210.954376
1998	11053062016.098799
1999	11400903446.564407
2000	10161254637.730747
2001	10489912480.850483
2002	10945053377.55632
2003	15357096458.645864
2004	18401830856.86572
2005	21228814137.82129
2006	25079861130.983166
2007	28515729277.34284
2008	28867966604.44941
2009	27328848415.056538
2010	32420882606.425133
2011	36811976413.05599
2012	40266830347.19664
2013	40145938696.85503
2014	42183217673.617836
2015	39356793707.279816
2016	37623872485.72874
2017	41878081771.36044
2018	45604443012.82123
2019	44817320116.59178
2020	26621872674.407925
2021	32346535016.788826
2022	44581470307.223366