Year	current US$
1970	24729999.58693981
1971	23779999.928548895
1972	8060000.11041762
1973	19200000.120326906
1974	12209999.53895803
1975	14150000.356137747
1976	11539999.926462771
1977	14150000.268593429
1978	15160000.035539262
1979	18420000.18060207
1980	39030000.39234761
1981	78029999.69571826
1982	150640000.1831352
1983	227699999.46095055
1984	334599998.5635287
1985	411359997.4922836
1986	863059987.992049
1987	1062060005.1041696
1988	1272930004.4719129
1989	844479988.828301
1990	962460011.5567439
1991	545259999.0889432
1992	665820005.7037174
1993	564769992.0013548
1994	348100001.8175691
1995	273160001.7454476
1996	241910001.9950419
1997	247239999.30731958
1998	480649997.2473831
1999	172140000.51841146
2000	239219996.43184254
2001	187160001.2052806
2002	771139992.9542093
2003	721100008.1337987
2004	286790000.7907301
2005	290689999.71263117
2006	260829998.2268359
2007	305270005.38632274
2008	464979994.15546685
2009	375730008.08060175
2010	286769998.4740466
2011	781410014.5306443
2012	148930000.42624778
2013	157400000.8367002
2014	172279999.8223781
2015	279529999.1723148
2016	296299999.8368318
2017	326509997.56157386
2018	367389999.0376087
2019	277339998.76305467
2020	255360003.21246675
2021	925650026.2059275
2022	381229994.15732926