Year	current US$
1987	3300000.0715255802
1988	25000000.77486043
1989	25460000.587627314
1990	154279998.4123558
1991	212159996.77777293
1992	411990005.65521467
1993	255650005.53429168
1994	225959995.9105259
1995	143719998.03185478
1996	132149996.49301176
1997	132679999.61227168
1998	117079998.20448452
1999	146679997.77570367
2000	78269999.1241097
2001	142419999.0332127
2002	154409998.80060557
2003	127530000.24706136
2004	159999999.53992662
2005	136310001.76444644
2006	265109997.0154464
2007	422469997.0334766
2008	510560004.91976774
2009	712929991.4427099
2010	408039995.4933674
2011	219920002.13637942
2012	80529999.77767469
2013	77299998.58885998
2014	28899999.711662535
2015	-29600000.130012594
2016	-4690002.011135131
2017	12579999.621957464
2018	35260001.016780764
2019	68370000.31955554
2020	54019999.54879293
2021	55930002.32055779
2022	62740001.663565606