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	10616719986.058771
1991	10247629918.754107
1992	10277690064.072617
1993	9546879878.908403
1994	11313939878.210428
1995	9618859936.732805
1996	8901969987.466932
1997	8030830018.69917
1998	8090159899.115567
1999	7650529933.452609
2000	7358050029.2778015
2001	9080439965.24811
2002	12499710153.102877
2003	20057569652.080536
2004	21048840009.68934
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