Year	current US$
1983	1000000
1984	1000000
1985	1000000
1986	400000.006
1987	500000
1988	100000.0015
1989	1299999.952
1990	400000.006
2000	13300000
2001	11900000
2002	12400000
2003	11800000
2004	11600000
2005	0
2006	0
2007	0
2008	0
2009	51938053.6776965
2010	62324923.1059028
2011	70917381.8950211
2012	72030040.7443826
2013	71108144.9065198
2014	60612706.416405
2015	58992215.8381229
2016	64551112.6635094
2017	66541753.587694
2018	69856849.7873431
2019	69372771.3618018
2020	66197477.5911306
2021	66484972.9580665
2022	69392670.4342172
2023	73260078.4301758