Year	current US$
1988	269999.9939650298
1989	3039999.9506771523
1990	9459999.773651358
1991	1610000.006854534
1992	5999999.9292194825
1993	12619999.61920078
1994	4609999.882057314
1995	5039999.883621929
1996	8440000.066533687
1997	5479999.983683229
1998	3869999.993592497
1999	10959999.965503814
2000	20709999.72335998
2001	22900000.43436887
2002	4939999.978989357
2003	2099999.9511986985
2004	3119999.9470263687
2005	17720000.516623277
2006	26470000.298693772
2007	14969999.894499771
2008	15240000.147372482
2009	17810000.10110437
2010	66929998.06255108
2011	59029999.74042184
2012	64770000.398159
2013	72129998.0357289
2014	57089999.5248764
2015	64250001.0281802
2016	72209999.78668983
2017	118360000.5637854
2018	93969999.32453038
2019	231509999.78557235
2020	127940001.63674347
2021	154139999.94099137
2022	166890001.44600865