Year	current US$
1991	140000.000596046
1992	109999.999403954
1993	109999.999403954
1994	90000.0035762787
1995	79999.9982118607
1996	39999.9991059303
1997	50000.0007450581
1998	29999.999329447703
2000	19999.9995529652
2001	19999.9995529652
2002	70000.0002980232
2003	19999.9995529652
2004	90000.0035762787
2005	140000.000596046
2006	119999.997317791
2007	209999.993443489
2008	189999.99761581398
2009	9999.99977648258
2010	389999.98569488496
2011	1200000.04768372
2012	1899999.97615814
2013	1539999.96185303
2014	2019999.9809265102
2015	3349999.90463257
2016	3009999.99046326
2017	5730000.01907349
2018	4739999.771118159
2019	2980000.01907349
2020	2420000.07629395
2021	3880000.1144409203
2022	3940000.05722046