Year	current US$
1968	1740000.0095367401
1969	1460000.03814697
1970	1509999.9904632599
1971	1679999.94754791
1972	1879999.99523163
1973	1340000.0333786
1974	1480000.01907349
1975	3630000.1144409203
1976	3289999.96185303
1977	2769999.98092651
1978	3829999.92370605
1979	3599999.90463257
1980	3289999.96185303
1981	13890000.3433228
1982	8449999.80926514
1983	6579999.92370605
1984	6949999.80926514
1985	8270000.45776367
1986	7019999.98092651
1987	8770000.45776367
1988	12689999.5803833
1989	15579999.923706101
1990	13390000.3433228
1991	15550000.1907349
1992	14659999.8474121
1993	11890000.3433228
1994	7960000.03814697
1995	6409999.84741211
1996	10479999.5422363
1997	16969999.3133545
1998	12449999.8092651
1999	6159999.84741211
2000	4139999.8664856004
2001	4250000
2002	4010000.2288818406
2003	4489999.771118159
2004	5429999.82833862
2005	6130000.11444092
2006	7110000.1335144
2007	7900000.09536743
2008	12510000.2288818
2009	11180000.3051758
2010	4900000.09536743
2011	3640000.10490417
2012	7449924.46899414
2013	8857489.58587646
2014	10790377.6168823
2015	8546315.19317627
2016	7154526.2336731
2017	7301125.04959106
2018	6756734.84802246
2019	7689563.751220699
2020	9909634.59014893
2021	9643606.18591309
2022	7339810.84823608