Year	current US$
1968	2349999.90463257
1969	1379999.99523163
1970	1289999.96185303
1971	1429999.94754791
1972	1389999.98569489
1973	1610000.01430511
1974	2390000.10490417
1975	5369999.88555908
1976	4239999.771118159
1977	1889999.98569489
1978	1840000.0333786
1979	3859999.89509583
1980	4510000.228881841
1981	4550000.19073486
1982	3349999.90463257
1983	2470000.02861023
1984	2869999.8855590797
1985	2450000.04768372
1986	5460000.03814697
1987	6139999.8664856
1988	5289999.96185303
1989	2369999.8855590797
1990	3660000.08583069
1991	4519999.98092651
1992	1759999.9904632599
1993	1350000.02384186
1994	1460000.03814697
1995	1799999.95231628
1996	4010000.2288818406
1997	-3829999.92370605
1998	1870000.00476837
1999	2119999.8855590797
2000	400000.00596046395
2001	180000.00715255702
2002	150000.005960464
2003	19999.9995529652
2004	899999.976158142
2005	1340000.0333786
2006	1799999.95231628
2007	1070000.05245209
2008	1480000.01907349
2009	1100000.02384186
2010	870000.004768372
2011	730000.019073486
2012	692945.957183838
2013	619167.983531952
2014	598392.78459549
2015	554158.508777618
2016	1036682.60574341
2017	348001.748323441
2018	354846.894741058
2019	350250.005722046
2020	514985.68058013904
2021	729025.185108185
2022	640569.150447845