Year	current US$
1970	539999.9916553491
1971	689999.9976158141
1972	790000.0065565107
1973	2260000.0277161594
1974	13460000.175982717
1975	84329998.61985447
1976	44099999.60102144
1977	176659999.89956623
1978	242389999.44925293
1979	187830004.59894496
1980	174810002.04570574
1981	145179999.3664025
1982	186650000.7957219
1983	191860000.5283952
1984	228120005.99689788
1985	199990001.61327425
1986	310079995.41051656
1987	392740005.03867877
1988	469969991.7510151
1989	329479999.56086284
1990	460639994.75352466
1991	1407140013.4842842
1992	406260000.0333049
1993	579920011.1851102
1994	796900003.1277542
1995	705649999.4322653
1996	529460009.45009357
1997	504490004.8729035
1998	418360002.2662433
1999	585200005.8181583
2000	580980003.6046656
2001	348819999.465719
2002	192620000.03084546
2003	300860001.7614662
2004	881370005.8590623
2005	3491440098.522231
2006	941440003.7117305
2007	854450008.4612516
2008	2031879974.0355463
2009	307250001.564622
2010	505090011.1794469
2011	485539992.3324582
2012	712389993.8464164
2013	847920022.7260587
2014	680730006.2179563
2015	695540010.6906896
2016	1032099973.9170072
2017	864699994.459749
2018	815570017.09938
2019	791199996.2031841
2020	1193700003.027916
2021	1062210007.667542
2022	1290910032.9875946