Year	current US$
1970	3310000.007972121
1971	1869999.9749660483
1972	4389999.959617855
1973	3749999.973922968
1974	5919999.899342655
1975	4179999.981075528
1976	4809999.97630715
1977	8790000.023320325
1978	9859999.964013696
1979	14239999.957382677
1980	16699999.945238242
1981	12869999.96937812
1982	16159999.813884493
1983	22249999.996274706
1984	23170000.122860074
1985	25580000.029876817
1986	35559999.92229045
1987	50749999.670311786
1988	50550000.14603134
1989	55740000.39324163
1990	56880000.48324459
1991	85109999.69951801
1992	75480000.01534821
1993	53200000.26561321
1994	87529999.33250248
1995	83659999.73937878
1996	87399999.28325412
1997	51950000.66980711
1998	63060000.09179117
1999	62830000.5961209
2000	52100000.09462241
2001	50860000.40173536
2002	62770000.03680588
2003	84460000.08285037
2004	96070001.17003919
2005	93739998.87332325
2006	82869999.42176047
2007	93939999.49842687
2008	81069999.45640561
2009	100780000.68105759
2010	118410000.76569614
2011	136629999.91327524
2012	133329999.78214517
2013	156860002.60524464
2014	161160003.4739821
2015	171829999.18982393
2016	173690001.5603751
2017	167959999.6656179
2018	163359997.28552994
2019	180800001.52811408
2020	181619999.97496593
2021	185949997.08980322
2022	151779998.02865088