Year	current US$
1960	3430000.0667572
1961	5440000.05722046
1962	5219999.79019165
1963	5300000.19073486
1964	8789999.96185303
1965	9399999.61853027
1966	12960000.038146999
1967	15210000.038146999
1968	13659999.8474121
1969	11439999.5803833
1970	6449999.80926514
1971	10449999.8092651
1972	8250000
1973	4789999.96185303
1974	8159999.847412109
1975	8920000.07629395
1976	8409999.84741211
1977	7840000.15258789
1978	10100000.3814697
1979	15850000.3814697
1980	19489999.7711182
1981	15520000.4577637
1982	12140000.3433228
1983	13699999.8092651
1984	11010000.2288818
1985	6340000.15258789
1986	8229999.54223633
1987	10670000.076293899
1988	12619999.8855591
1989	10880000.1144409
1990	10270000.4577637
1991	15550000.1907349
1992	10439999.5803833
1993	9840000.15258789
1994	4150000.09536743
1995	5860000.1335144
1996	4739999.771118159
1997	6530000.20980835
1998	5239999.771118159
1999	4840000.15258789
2000	3730000.01907349
2001	2750000
2002	2160000.08583069
2003	1139999.98569489
2004	460000.00834465
2005	250000
2006	59999.9986588955
2007	409999.99642372096
2008	1049999.95231628
2009	920000.016689301
2010	1059999.9427795399
2011	1559999.9427795399
2012	899999.976158142
2013	1230000.01907349
2014	819999.992847443
2015	1610000.01430511
2016	379999.99523162795
2017	1379999.99523163
2018	1480000.01907349
2019	2529999.97138977
2020	2440000.05722046
2021	3240000.00953674
2022	860000.014305115