Year	current US$
1977	330000.013113022
1980	100000.00149011599
1981	990000.009536743
1982	159999.99642372102
1983	509999.99046325695
1984	209999.993443489
1985	300000.011920929
1986	300000.011920929
1987	879999.995231628
1988	4500000
1989	4150000.09536743
1990	7269999.98092651
1991	7800000.19073486
1992	5750000
1993	8880000.11444092
1994	14890000.3433228
1995	28750000
1996	25229999.5422363
1997	24489999.7711182
1998	23139999.3896484
1999	19750000
2000	16590000.152587902
2001	17469999.3133545
2002	22200000.762939498
2003	24229999.5422363
2004	24760000.2288818
2005	20909999.8474121
2006	23389999.3896484
2007	21409999.8474121
2008	17790000.915527303
2009	17840000.1525879
2010	13220000.2670288
2011	13050000.1907349
2012	12130000.1144409
2013	9989999.77111816
2014	12189999.5803833
2015	6599999.90463257
2016	7780000.20980835
2017	7690000.05722046
2018	6449999.80926514
2019	5360000.1335144
2020	5889999.8664856
2021	6179999.82833862
2022	5489999.771118159