Year	current US$
1975	19999.9995529652
1977	280000.001192093
1979	300000.011920929
1980	180000.00715255702
1981	460000.00834465
1982	6480000.01907349
1984	680000.007152557
1985	660000.026226044
1986	449999.988079071
1987	340000.00357627904
1988	730000.019073486
1989	699999.988079071
1990	1029999.97138977
1991	769999.980926514
1992	1110000.01430511
1993	1149999.97615814
1994	1490000.0095367401
1995	2640000.10490417
1996	3740000.00953674
1997	6130000.11444092
1998	4659999.84741211
1999	3930000.0667572
2000	3730000.01907349
2001	4280000.20980835
2002	5340000.15258789
2003	6030000.20980835
2004	6440000.05722046
2005	7710000.03814697
2006	27790000.915527303
2007	15279999.7329712
2008	10840000.1525879
2009	9840000.15258789
2010	9260000.22888184
2011	12199999.8092651
2012	15199999.8092651
2013	23649999.6185303
2014	23030000.6866455
2015	35439998.626709
2016	65000000
2017	63279998.779296905
2018	64430000.305175796
2019	50500000
2020	56450000.762939505
2021	53959999.0844727
2022	44819999.6948242