Year	current US$
1974	550000.011920929
1975	620000.004768372
1976	330000.013113022
1977	469999.998807907
1978	620000.004768372
1979	790000.021457672
1980	3420000.07629395
1981	7360000.1335144
1982	4840000.15258789
1983	2089999.9141693101
1984	8899999.61853027
1985	3380000.1144409203
1986	5869999.88555908
1987	8590000.15258789
1988	6659999.84741211
1989	6429999.82833862
1990	8020000.45776367
1991	7360000.1335144
1992	10060000.4196167
1993	9699999.80926514
1994	9810000.4196167
1995	6840000.15258789
1996	1480000.01907349
1997	4489999.771118159
1998	2950000.04768372
1999	2980000.01907349
2000	3900000.09536743
2001	3329999.92370605
2002	3160000.08583069
2003	2490000.00953674
2004	1919999.95708466
2005	2400000.09536743
2006	-920000.016689301
2007	-970000.028610229
2008	70000.0002980232
2009	2470000.02861023
2010	829999.983310699
2011	1590000.0333786
2012	1919999.95708466
2013	1059999.9427795399
2014	1080000.04291534
2015	889999.985694885
2016	1470000.02861023
2017	910000.026226044
2018	2299999.95231628
2019	2589999.91416931
2020	2859999.89509583
2021	2359999.89509583
2022	2180000.0667572