Year	current US$
1970	774410010.7103579
1971	873219992.7624317
1972	1111990011.155605
1973	1648199988.7172132
1974	2817139992.0675898
1975	3402269974.1609406
1976	3294650036.5138073
1977	4018049914.360045
1978	4592940073.737877
1979	6426939869.612455
1980	7133160007.953642
1981	7107980003.833771
1982	6416810014.709836
1983	5888719908.89311
1984	5633819972.515106
1985	6578039898.395538
1986	7109550003.349782
1987	8326980025.291445
1988	8177569979.209453
1989	7952359924.316408
1990	10327719986.058771
1991	9879329930.961138
1992	9719990051.865585
1993	9218439876.466997
1994	11023589872.106913
1995	9299239941.615618
1996	8503909989.908339
1997	7758250032.1269045
1998	7621759905.219083
1999	7077369960.308078
2000	6800980021.953583
2001	8558659948.349001
2002	12016530161.857607
2003	19721299666.88156
2004	20659949995.0409
2005	47304280132.29371
2006	41804640214.92006
2007	36230859768.86751
2008	39376650188.446045
2009	35753639945.98391
2010	38549889998.91283
2011	40066959819.79371
2012	37781279987.335205
2013	44398920131.68339
2014	42205360240.93629
2015	41090899932.86134
2016	47507100129.127525
2017	53366339448.92887
2018	59076190298.08046
2019	56245419673.91972
2020	64136479751.58696
2021	62069669792.17534