Year	current US$
1990	18334418129.4606
1991	22519452671.0076
1992	25052291289.3466
1993	32139702427.448
1994	35154995176.5297
1995	39209654361.8077
1996	38829705184.6423
1997	24807663648.1701
1998	14661975776.0136
1999	16619507013.5988
2000	15973724599.4132
2001	11435387528.6187
2002	15017901967.5757
2003	18074296558.7242
2004	21213829852.2387
2005	23017380241.7615
2006	32745345689.324
2007	45377122224.7294
2008	41148779933.7157
2009	38524542606.868
2010	47878371807.7388
2011	59497083123.8671
2012	47724459757.996
2013	43706276826.3971
2014	40492553052.173
2015	43002416610.6204
2016	54233743441.8259
2017	69458785224.8194
2018	74983277951.3899
2019	80174619371.2926
2020	48276972822.3466
2021	45056028267.807