Year	current US$
1970	5670000.124722714
1971	4159999.98897314
1972	6039999.885484583
1973	11239999.987185005
1974	12250000.054016715
1975	12660000.024363399
1976	14100000.014528625
1977	19349999.994039543
1978	37620000.151917346
1979	34589999.822899684
1980	48489999.94434414
1981	47439999.82066454
1982	60400000.07115305
1983	74140000.6860495
1984	86450000.45932828
1985	91759999.7166544
1986	138899999.12120402
1987	143679998.70330095
1988	158840000.54933137
1989	148259997.89871278
1990	205969998.37830687
1991	228430000.14685082
1992	220559999.17164433
1993	180429998.78339475
1994	193260002.1529943
1995	218630001.8541515
1996	192930000.9720026
1997	160750000.81397593
1998	151469999.57412472
1999	144699999.3305653
2000	134950000.42580068
2001	131900001.6991049
2002	157649999.32982022
2003	220139999.77335325
2004	214299998.26662257
2005	271459998.2574582
2006	261660001.71937048
2007	274560001.8650293
2008	235240000.09149325
2009	411930001.5084443
2010	293330000.4508348
2011	421089996.1702524
2012	389750000.4563481
2013	401829997.9679287
2014	427069999.38935053
2015	455400003.7442892
2016	401740004.75555664
2017	424149997.4932521
2018	436570001.2855231
2019	437879998.84411687
2020	483850001.94981694
2021	514940007.65494996
2022	511019997.38998723