Year	current US$
1977	250000
1980	3200000.04768372
1981	2740000.00953674
1982	1639999.98569489
1983	2559999.94277954
1984	1620000.00476837
1985	2220000.02861023
1986	1580000.04291534
1987	1889999.98569489
1988	289999.99165535
1989	1940000.0572204601
1990	2259999.99046326
1991	3140000.10490417
1992	2089999.9141693101
1993	2250000
1994	3859999.89509583
1995	3779999.97138977
1996	6190000.05722046
1997	2029999.97138977
1998	6590000.15258789
1999	3910000.08583069
2000	2480000.01907349
2001	4889999.8664856
2002	3299999.95231628
2003	2829999.92370605
2004	3319999.9332428
2005	4809999.94277954
2006	3930000.0667572
2007	4289999.96185303
2008	5599999.90463257
2009	4360000.1335144
2010	3339999.91416931
2011	3049999.95231628
2012	4257996.08230591
2013	3435689.92614746
2014	4223662.37640381
2015	4376431.46514893
2016	3505603.3134460403
2017	2448466.06254578
2018	2298310.04142761
2019	3118018.86558533
2020	3511770.00999451
2021	4104050.1594543504
2022	3717869.9970245403