Year	current US$
1980	0
1981	0
1982	0
1983	0
1984	0
1985	0
1986	0
1987	43200000.6437302
1988	66610000.7891655
1989	83899999.2441386
1990	221809997.780249
1991	330270001.37232196
1992	507610002.93307
1993	540310012.677684
1994	468329994.104803
1995	333759999.73714405
1996	352859998.95073503
1997	296199998.466298
1998	272750002.807006
1999	338889996.998012
2000	294210000.876337
2001	319930000.612512
2002	390210000.66399604
2003	397889997.588471
2004	485609999.537468
2005	624509995.637462
2006	929029986.42996
2007	990349998.716265
2008	1306049994.4631
2009	1120659991.6964798
2010	789570001.484826
2011	411269997.93946695
2012	157140000.53890002
2013	130849999.12232201
2014	58110001.5603006
2015	5819994.41236258
2016	2150909881.82835
2017	76059999.3430078
2018	117580001.24618399
2019	159200002.36667702
2020	184060000.75116798
2021	216290001.930669
2022	208779998.45892182