Year	current US$
1970	7909999.96103346
1971	9850000.32000244
1972	7579999.82126057
1973	9360000.09998679
1974	20740000.4211813
1975	24159999.9833852
1976	18540000.256151
1977	22319999.7339398
1978	31199999.893084202
1979	56139999.5982647
1980	86490000.8440018
1981	61170000.5531311
1982	40750000.0596046
1983	42500000.461936
1984	40180000.141263
1985	42699999.231845096
1986	59389999.2741644
1987	57699999.1610646
1988	54299999.620765395
1989	63960001.079365596
1990	63109999.9137223
1991	70260000.3033876
1992	88900000.4827976
1993	90950000.0476837
1994	87949999.52986841
1995	90769999.8021126
1996	86790001.0347366
1997	65120000.4220009
1998	56660000.026226
1999	57059999.7937679
2000	51650000.6318092
2001	46549999.475479096
2002	44310000.0023842
2003	46790000.3194809
2004	46100000.500679
2005	57050000.2801418
2006	54130000.2336502
2007	68180000.603199
2008	59790000.0214577
2009	66770000.755786896
2010	67610000.4315376
2011	62769999.444484696
2012	58217925.131321006
2013	58145468.2350159
2014	63086660.504341096
2015	66632975.110609606
2016	64646997.724659696
2017	64380410.6712341
2018	69621394.6938515
2019	67434000.2536774
2020	61843000.0543594
2021	61175000.0715256
2022	56647999.823093474