Year	current US$
1987	3300000.0715255802
1988	6200000.107288368
1989	23700000.42021278
1990	86020000.81166631
1991	135829997.7481365
1992	244020001.7131866
1993	95119999.57449742
1994	71760001.86428429
1995	55720000.836998284
1996	47989999.06331304
1997	68980000.43444337
1998	83009998.58975415
1999	35079999.119043306
2000	9379999.898374077
2001	71049998.2945621
2002	71110000.65505508
2003	99480001.08823189
2004	166279999.91178513
2005	258279998.04914021
2006	395899999.17894584
2007	270310001.1423227
2008	417460003.2661116
2009	444479995.5263727
2010	305709994.19689184
2011	184280002.11715704
2012	65270000.70363281
2013	69900000.67651267
2014	40979999.870061845
2015	6710000.295191984
2016	39809998.69108199
2017	65749997.88403511
2018	41170001.983642496
2019	49739999.77111814
2020	7320000.112056737
2021	32039999.76813789
2022	36810000.36001206