Year	current US$
1970	3219999.928027395
1971	10040000.218898065
1972	5530000.1800060235
1973	12729999.789968133
1974	17089999.94210899
1975	17530000.24706126
1976	8949999.844655402
1977	15729999.754577868
1978	17430000.68329278
1979	44980000.10475509
1980	14670000.143349167
1981	20890000.23715194
1982	5019999.884068971
1983	6810000.011697415
1984	12829999.72254038
1985	10199999.531731006
1986	4909999.77663159
1987	4929999.992251403
1988	389999.93354082387
1989	-3270000.0889599305
1990	15940000.358968968
1991	5060000.177472834
1992	2649999.987334019
1993	7709999.816492203
1994	15049999.86290931
1995	-2270000.0759214084
1996	-7630000.237375503
1997	-6819999.825209368
1998	-2800000.045448539
1999	-890000.0564754023
2000	-2220000.0789016513
2001	16570000.009611256
2002	620000.1128017897
2003	10189999.844878914
2004	-13480000.5070865
2005	11919999.77827071
2006	18889999.875798814
2007	19720000.326633498
2008	36180000.06675726
2009	37050001.144409165
2010	38400000.4138798
2011	38060000.83684927
2012	22529999.792575806
2013	13649999.946355823
2014	12800000.071525566
2015	6500000.143423678
2016	11359999.88019467
2017	3649999.901652336
2018	4680000.022053723
2019	5329999.953508381
2020	4110000.029206276
2021	6110000.159591432
2022	5769999.891519542