Year	current US$
1971	140000.000596046
1972	430000.00715255697
1973	19999.9995529652
1974	4159999.8474121103
1975	1679999.94754791
1976	1120000.00476837
1977	2369999.8855590797
1978	6590000.15258789
1979	2579999.92370605
1980	1340000.0333786
1981	2619999.8855590797
1982	5210000.03814697
1983	5179999.82833862
1984	2789999.96185303
1985	2230000.01907349
1986	4500000
1987	10550000.1907349
1988	6099999.90463257
1989	6679999.82833862
1990	7900000.09536743
1991	3400000.09536743
1992	9510000.22888184
1993	-3940000.05722046
1994	6940000.05722046
1995	8210000.038146971
1996	20159999.8474121
1997	24739999.7711182
1998	19780000.6866455
1999	29340000.1525879
2000	3279999.97138977
2001	2089999.9141693101
2002	17979999.5422363
2003	469999.998807907
2004	14189999.5803833
2005	6500000
2006	14609999.6566772
2007	27889999.3896484
2008	94980003.3569336
2009	93160003.6621094
2010	67879997.253418
2011	70319999.6948242
2012	87279998.7792969
2013	77169998.1689453
2014	-8260000.22888184
2015	34630001.0681152
2016	31069999.6948242
2017	-3859999.89509583
2018	14000000
2019	2960000.03814697
2020	-13649999.6185303
2021	1440000.0572204601
2022	7659999.84741211