Year	current US$
1988	800000.011920929
1989	6099999.90463257
1990	46430000.3051758
1991	32549999.2370605
1992	67629997.253418
1993	29520000.4577637
1994	55060001.373291
1995	28770000.4577637
1996	6239999.771118159
1997	15779999.7329712
1998	14710000.038146999
1999	4699999.80926514
2000	3119999.8855590797
2001	-5360000.1335144
2002	18360000.6103516
2003	4289999.96185303
2004	12659999.8474121
2005	-4019999.98092651
2006	43430000.3051758
2007	60540000.9155273
2008	64190002.44140631
2009	54349998.4741211
2010	9529999.73297119
2011	-610000.014305115
2012	2009999.9904632599
2013	-16139999.389648398
2014	1149999.97615814
2015	-27969999.3133545
2016	-24750000
2017	-25350000.3814697
2018	-24579999.9237061
2019	-19860000.6103516
2020	-21059999.4659424
2021	-13560000.4196167
2022	-1429999.94754791