Year	current US$
1970	101330000.180751
1971	137660003.67142266
1972	133500001.19209296
1973	140979998.11172488
1974	212899999.97615817
1975	248889998.9314377
1976	180970001.23932964
1977	122080002.79404221
1978	230789999.27453703
1979	259349996.6822566
1980	214460000.85771087
1981	265320002.33233038
1982	259419996.2094431
1983	243340008.98152623
1984	219630002.7221442
1985	273709999.4421005
1986	404769997.66379595
1987	321760001.27196354
1988	421740001.5890601
1989	328100003.83853865
1990	442509999.87125427
1991	495229995.9957595
1992	491929995.2238795
1993	325360002.3537871
1994	369770003.5572055
1995	302129995.82290626
1996	212259999.51362598
1997	129960001.17808573
1998	206589994.10271668
1999	209909996.46484858
2000	109550000.81658368
2001	221759997.81489363
2002	216320000.9148568
2003	194149996.2899834
2004	192229996.57131734
2005	250960009.21726218
2006	359749996.63233805
2007	521009997.1033627
2008	670159989.9642167
2009	830240001.6672916
2010	1109940012.4698877
2011	1282089981.0492985
2012	935939968.8839917
2013	1268099999.3085861
2014	1184410011.0530858
2015	1333649992.8236015
2016	959080010.0248315
2017	1252289983.4290147
2018	924949985.6606132
2019	1197130006.9987772
2020	1457080038.3687022
2021	1684179993.9870846
2022	975549990.6241889