Year	current USD
1970	13100436.6812227
1971	13749473.4089688
1972	12744615.6776231
1973	19426710.156176403
1974	24137429.6337841
1975	33493068.549271397
1976	34337727.558066495
1977	36633018.5607294
1978	37960435.352926604
1979	52566260.1893551
1980	57416698.220371105
1981	63535260.9750084
1982	72427162.0116492
1984	49423627.4965271
1985	55646692.4718929
1987	100513414.321697
1992	125617699.06155099
1993	109477580.051066
2001	54445943.5309718
2002	70704230.20195471
2003	93776668.9607708
2004	124298437.396481
2005	100916074.52964
2006	126569641.798466
2007	168079588.204487
2008	207724344.301649
2010	218390920.636331
2013	367057295.47164
2014	704893729.407907
2016	501812144.93783605
2017	371937055.07680804
2018	292260465.250187
2019	299953238.969346
2020	298382191.947452
2021	313055831.486947
2022	265847972.729665