Year	current US$
1981	1470000.02861023
1982	1230000.01907349
1983	300000.011920929
1984	3299999.95231628
1985	2410000.08583069
1986	3440000.05722046
1987	4690000.05722046
1988	870000.004768372
1989	1289999.96185303
1990	2759999.99046326
1991	2329999.92370605
1992	2210000.03814697
1993	1799999.95231628
1994	1779999.97138977
1995	1700000.04768372
1996	2089999.9141693101
1997	1759999.9904632599
1998	5170000.07629395
1999	3710000.03814697
2000	4179999.8283386203
2001	5840000.15258789
2002	2339999.91416931
2003	2359999.89509583
2004	2789999.96185303
2005	3339999.91416931
2006	3279999.97138977
2007	1480000.01907349
2008	4300000.19073486
2009	5789999.96185303
2010	7650000.09536743
2011	9310000.4196167
2012	9079999.92370605
2013	10640000.3433228
2014	7699999.80926514
2015	5495426.17797852
2016	8944830.89447021
2017	10120624.5422363
2018	12115644.454956101
2019	22761796.9512939
2020	12447454.4525146
2021	13354000.0915527
2022	9531720.16143799