Year	current US$
1968	2450000.04768372
1969	2009999.9904632599
1970	2450000.04768372
1971	3349999.90463257
1972	4300000.19073486
1973	3829999.92370605
1974	3019999.98092651
1975	3420000.07629395
1976	829999.983310699
1977	1029999.97138977
1978	3000000
1979	4440000.05722046
1980	3789999.96185303
1981	2990000.00953674
1982	2210000.03814697
1983	1990000.0095367401
1984	1350000.02384186
1985	1100000.02384186
1986	3690000.05722046
1987	1649999.97615814
1988	2140000.10490417
1989	3700000.04768372
1990	1820000.05245209
1991	-180000.00715255702
1992	469999.998807907
1993	-9999.99977648258
1994	930000.007152557
1995	1340000.0333786
1996	579999.983310699
1997	6190000.05722046
1998	16469999.3133545
1999	-19389999.3896484
2000	860000.014305115
2001	810000.002384186
2002	720000.028610229
2003	1620000.00476837
2004	3910000.08583069
2006	1870000.00476837
2007	1980000.01907349
2008	4190000.05722046
2009	4090000.1525878897
2010	970000.028610229
2011	3000000
2012	2811034.20257568
2013	2618254.89997864
2014	2467724.08485413
2015	2020850.8968353297
2016	1163947.46303558
2017	1269016.14665985
2018	487520.635128021
2019	483020.007610321
2020	708870.828151703
2021	1056785.34507751
2022	798394.680023193