Year	current US$
1978	550000.011920929
1980	3500000
1981	3420000.07629395
1982	2819999.9332428
1983	3349999.90463257
1984	3650000.09536743
1985	2700000.04768372
1986	3339999.91416931
1987	3710000.03814697
1988	3299999.95231628
1989	2630000.1144409203
1990	4389999.8664856
1991	7230000.01907349
1992	7460000.03814697
1993	8140000.34332275
1994	4679999.82833862
1995	8109999.65667725
1996	4630000.11444092
1997	3670000.07629395
1998	5989999.771118159
1999	3730000.01907349
2000	3450000.04768372
2001	3279999.97138977
2002	5019999.98092651
2003	6389999.8664856
2004	6579999.92370605
2005	6530000.20980835
2006	6070000.17166138
2007	6780000.20980835
2008	6639999.8664856
2009	7130000.11444092
2010	6849999.90463257
2011	7469999.79019165
2012	7309999.94277954
2013	7690000.05722046
2014	7519999.98092651
2015	5889999.8664856
2016	6250000
2017	6829999.92370605
2018	8750000
2019	8010000.22888184
2020	9550000.19073486
2021	9680000.30517578
2022	9939999.5803833