Year	current US$
1970	199999.9973922972
1971	630000.0064074994
1972	429999.9997019769
1973	779999.984428287
1974	2080000.0131130214
1975	2589999.943971633
1976	5780000.0775605375
1977	10609999.883919956
1978	15649999.730288979
1979	23619999.73654747
1980	37120000.759139724
1981	30620000.36612152
1982	19170000.268146385
1983	21589999.452233315
1984	21740000.0486523
1985	15340000.11347235
1986	28139999.756589532
1987	28939999.429509055
1988	32689999.60832297
1989	32540000.36790968
1990	31470000.054687254
1991	22830000.34466385
1992	29549998.991191383
1993	30400000.100955367
1994	33899999.864399426
1995	44119999.94330109
1996	41220000.3527105
1997	38420000.5773455
1998	35960000.10333955
1999	24810000.0265986
2000	25390000.30048193
2001	36049999.48292969
2002	20210000.164806847
2003	24239999.903365973
2004	34039999.72529713
2005	28790000.081062354
2006	18489999.99836092
2007	31059999.778866727
2008	25330000.191926904
2009	12839999.914169313
2010	9469999.90940094
2011	8600000.023841849
2012	3259999.9085068726
2013	1150000.024586918
2014	1620000.0420212701
2015	0
2017	279999.9937415123
2018	289999.9953806398
2019	170000.00551342918
2020	49999.99888241288
2021	50000.0007450581
2022	179999.9997019763