Year	current US$
1970	20099999.90463259
1971	16079999.540001158
1972	20699999.690055873
1973	32590000.286698304
1974	66319999.24778937
1975	97660000.99480154
1976	96300000.13113023
1977	142569994.56882483
1978	214099999.24898154
1979	185739997.4092841
1980	253570003.22081158
1981	278070008.0469248
1982	194930004.3862313
1983	140750000.15646213
1984	154589998.90089035
1985	133010000.39279465
1986	186160000.860691
1987	227870002.3088604
1988	251430006.38484928
1989	210780000.6866455
1990	279369991.8985367
1991	230489998.00346816
1992	224610002.87532797
1993	144179998.63624573
1994	161529999.97138983
1995	220420002.25000075
1996	184660004.15757295
1997	185789998.53134152
1998	154809997.79701227
1999	75149997.71118166
2000	69560000.41961662
2001	242830000.6389618
2002	233809999.236837
2003	221860003.4713745
2004	-112090007.30514534
2005	332279994.9645996
2006	212449993.6103821
2007	254459994.6141243
2008	263979998.82698035
2009	273959989.78614783
2010	256050000.90599057
2011	222290003.9553646
2012	170140001.40130517
2013	182659998.75217685
2014	135870001.56939033
2015	120389997.48229983
2016	107010000.80257657
2017	104220002.56925817
2018	103070001.6245246
2019	115110000.2937019
2020	88390003.37198377
2021	65559998.92950052
2022	51890001.2373925