Year	current US$
1972	7890000.04902482
1973	9969999.950379131
1974	14329999.923706047
1975	28149999.829009198
1976	24879999.902099375
1977	21730000.42699278
1978	23280000.38303435
1979	24400000.350549817
1980	21919999.994337566
1981	21869999.98241662
1982	19850000.17285346
1983	20059999.708086245
1984	20520000.137388695
1985	18870000.07182359
1986	18240000.028163183
1987	28879999.44761395
1988	22529999.846592546
1989	23350000.122562043
1990	35789999.90783631
1991	25889999.92795289
1992	32440000.038594
1993	36330000.43593348
1994	31370000.116527073
1995	45230000.01721084
1996	49020000.586286195
1997	53539999.989792705
1998	46669999.819248915
1999	51320000.0524521
2000	42369999.74772336
2001	41750000.23841857
2002	40769999.93622304
2003	51419999.99806285
2004	66239999.344572455
2005	72699999.33801582
2006	91509998.98836023
2007	103660000.12494625
2008	116339997.41636217
2009	112219999.05817215
2010	132739999.86611289
2011	152369998.3544647
2012	175210000.92290348
2013	168160001.45301217
2014	202200001.05537483
2015	183179998.73682845
2016	178610002.70396465
2017	172860002.01106074
2018	218899999.02993456
2019	194239997.35713002
2020	215770001.5753508
2021	296409998.02947044
2022	145469998.71544537