Year	current US$
1968	2200000.04768372
1969	2150000.09536743
1970	2559999.94277954
1971	3230000.01907349
1972	2190000.05722046
1973	3049999.95231628
1974	3319999.9332428
1975	4349999.90463257
1976	2759999.99046326
1977	2269999.98092651
1978	2910000.08583069
1979	3750000
1980	3410000.08583069
1981	3089999.91416931
1982	4280000.20980835
1983	3539999.96185303
1984	5159999.84741211
1985	3490000.00953674
1986	4949999.80926514
1987	6050000.19073486
1988	6360000.1335144
1989	5039999.96185303
1990	2650000.09536743
1991	2710000.03814697
1992	6530000.20980835
1993	9909999.84741211
1994	-6710000.03814697
1995	-1080000.04291534
1996	680000.007152557
1997	5219999.79019165
1998	2000000
1999	-3809999.94277954
2000	-230000.004172325
2001	569999.992847443
2002	660000.026226044
2003	709999.978542328
2004	819999.992847443
2005	660000.026226044
2006	870000.004768372
2007	810000.002384186
2008	1100000.02384186
2009	1830000.04291534
2010	829999.983310699
2011	439999.997615814
2012	636096.656322479
2013	691143.9895629879
2014	637678.205966949
2015	381322.145462036
2016	665256.023406982
2017	652262.568473816
2018	349356.44268989604
2019	559763.371944427
2020	381165.415048599
2021	785519.71912384
2022	618709.325790405