Year	current US$
1980	0
1981	0
1982	0
1983	0
1984	0
1985	0
1986	0
1987	0
1988	19500000.7748604
1989	3069999.99471009
1990	123279998.267069
1991	107979997.381568
1992	205470001.811162
1993	226910006.18040597
1994	215269995.95575002
1995	112409998.69816
1996	89599998.4871596
1997	105309997.60329701
1998	49009999.8582155
1999	65450000.7200986
2000	109740002.468228
2001	74019997.8910387
2002	52319999.0857393
2003	64680000.225081995
2004	49940000.481903605
2005	83000002.6226044
2006	61290000.6715208
2007	144379997.575656
2008	189320002.68436998
2009	100369998.978451
2010	88359999.2040545
2011	20729999.0877509
2012	24299999.7586012
2013	-20810000.4326552
2014	3060000.28550625
2015	-61820000.1660734
2016	-46220000.5557388
2017	-52629999.9132752
2018	-62840000.2755225
2019	-55340000.117197596
2020	-54330000.080168195
2021	-51890000.782907
2022	-49050001.185387366