Year	current US$
1970	13747699.8316369
1971	23075200.1908561
1972	35909863.5993968
1973	42438922.4984424
1974	209862328.268727
1975	247338355.965102
1976	251678774.448885
1977	241423617.264253
1978	276374338.453768
1979	758832700.099988
1980	1198623718.36921
1981	900635870.80015
1982	500130348.758114
1983	748480125.8282
1984	805102461.657097
1985	637574462.440166
1986	605061242.9624
1987	381077055.182155
1988	293081629.395743
1989	516673727.714509
1990	879377841.465249
1991	518323615.889169
1992	405146467.797411
1993	665896201.578986
1994	584021115.486385
1995	1100377374.4807
1996	1060720421.90691
1997	1059123663.20616
1998	207011667.670063
1999	342308833.608207
2000	1318859037.14656
2001	1927909180.59967
2002	1349671831.29166
2003	1525573085.97544
2004	1471668510.74626
2005	1400063184.21922
2006	2509934677.79788
2007	2792197367.4674
2008	5089533980.81468
2009	3160435902.94273
2010	3037761383.05136
2011	4729279941.3786
2012	5143878303.88467
2013	5422851493.41171
2014	4006527204.33851
2015	2554699780.79805
2016	1522529644.83083
2017	2102744016.80301
2018	3656056559.16942
2019	2528377141.4092
2020	986168016.619761
2021	5858979284.15965