Year	current US$
1970	1279999.9974668028
1971	949999.9750405538
1972	949999.989941716
1973	1649999.9817460761
1974	2150000.0357627855
1975	6049999.922513963
1976	2509999.994188547
1977	5929999.986663466
1978	7489999.912679189
1979	9909999.994561076
1980	12180000.133812428
1981	25920000.175014134
1982	38480000.40277837
1983	35589999.30694703
1984	21729999.94829297
1985	16620000.198483482
1986	11390000.114217397
1987	9889999.743551018
1988	21400000.210851464
1989	29979999.659582943
1990	31510000.009089716
1991	27999999.919906255
1992	31520000.273361795
1993	27920000.376179803
1994	37709999.87050889
1995	34600000.74841086
1996	26370000.07554888
1997	26929999.509826273
1998	19759999.80047344
1999	90019997.1906841
2000	104510002.02260917
2001	54710000.09216367
2002	63530000.8989871
2003	88780000.3178418
2004	105320000.0710785
2005	98770000.12435022
2006	366129986.73692405
2007	476109993.0070346
2008	503129998.5572691
2009	252079996.6230989
2010	345450003.07075626
2011	495150003.66046995
2012	541749994.4847077
2013	413160002.28188896
2014	335919997.8075922
2015	220949995.97780403
2016	184949997.88887793
2017	239279995.16576537
2018	206590000.7952005
2019	184089999.83780086
2020	171570000.242442
2021	197740003.7236511
2022	185020005.4645539