Year	current US$
1970	22089999.828487635
1971	33120000.192895524
1972	31370000.53934752
1973	53149998.76357619
1974	60240000.162273675
1975	72939999.66979027
1976	69619999.91163613
1977	76649998.81573021
1978	85380001.67161229
1979	127210000.24676317
1980	125570000.20518899
1981	101080001.2890249
1982	69929999.52845272
1983	71520000.26963651
1984	67430000.02950431
1985	62729999.04304743
1986	75499999.15622178
1987	82650001.78292394
1988	81579999.32952222
1989	67759999.29569669
1990	116899999.38383693
1991	191190001.72056252
1992	147030000.3606826
1993	129110000.03106892
1994	105380000.35658479
1995	135389999.6671826
1996	164109999.72373244
1997	76240000.68940228
1998	108760000.73738402
1999	94859999.2021918
2000	84170000.2215802
2001	94369999.18520445
2002	90160000.41179362
2003	119399999.30933118
2004	148629996.79520717
2005	184270001.60515308
2006	240850002.6725234
2007	192160000.24229297
2008	293249996.5932222
2009	252680002.10262835
2010	267619999.36588115
2011	269799998.2330948
2012	218720001.17413703
2013	213520002.1024793
2014	209199996.35219574
2015	190480001.46821135
2016	263580000.73954463
2017	179879998.4809011
2018	205700000.02160668
2019	188989999.7357279
2020	197780000.2470613
2021	201250001.53854477
2022	148029999.4498492