Year	current US$
1971	19999.9995529652
1973	340000.00357627904
1974	369999.98986721004
1975	169999.9962002039
1976	4220000.118017192
1977	4079999.912530185
1978	3520000.1150369663
1979	4150000.0394880758
1980	7489999.940618872
1981	3780000.0589340925
1982	7069999.892264611
1983	21180000.010877833
1984	35490000.08404254
1985	33479999.918490615
1986	32510000.523179807
1987	32429999.82833861
1988	33419999.8378754
1989	32359999.77588651
1990	36340000.33140187
1991	34819999.53836198
1992	41619999.306276426
1993	31530000.599101182
1994	31680000.374093663
1995	25179999.48002398
1996	16369999.835267663
1997	17709999.72894787
1998	15949999.894946812
1999	13420000.510290261
2000	9159999.74310398
2001	11829999.685287477
2002	11379999.935626982
2003	11279999.822378168
2004	5500000.000000004
2005	5340000.033378608
2006	1420000.00923872
2007	2129999.998956917
2008	7689999.878406523
2009	10260000.10222196
2010	7830000.057816504
2011	14920000.076293949
2012	8555200.007860545
2013	3389105.9957968546
2015	15935217.060148709
2016	36327082.157135054
2017	36328409.552574076
2018	25496449.589729313
2019	12695271.814707672
2020	13366536.714756433
2021	28954149.78265762
2022	16354100.152850142