Year	current US$
1970	230000.004172325
1971	170000.00178813902
1972	200000.00298023198
1973	200000.00298023198
1974	219999.998807907
1975	740000.009536743
1976	1120000.00476837
1977	870000.004768372
1978	1320000.05245209
1979	1450000.04768372
1980	3259999.99046326
1981	5619999.88555908
1982	2799999.95231628
1983	4030000.2098083496
1984	3180000.0667572
1985	3000000
1986	2849999.90463257
1987	2819999.9332428
1988	3130000.1144409203
1989	2299999.95231628
1990	3640000.10490417
1991	4900000.09536743
1992	28379999.1607666
1993	31780000.6866455
1994	18219999.3133545
1995	15640000.3433228
1996	13989999.7711182
1997	4110000.1335143996
1998	3069999.9332428
1999	4889999.8664856
2000	4860000.1335144
2001	5550000.19073486
2002	4519999.98092651
2003	5099999.90463257
2004	4750000
2005	7860000.1335144
2006	7440000.05722046
2007	11960000.038146999
2008	12229999.5422363
2009	10000000
2010	11119999.8855591
2011	11189999.5803833
2012	10307743.0725098
2013	13123494.1482544
2014	15348978.9962769
2015	15966871.261596698
2016	18415937.4237061
2017	19232040.4052734
2018	20942819.5953369
2019	17687000.2746582
2020	15395999.9084473
2021	16697000.50354
2022	16226999.2828369