Year	current US$
1990	82648451.84422705
1991	142285661.66313657
1992	173993374.54321915
1993	182010224.82121307
1994	208637285.8862512
1995	219589535.80551398
1996	220869581.79745275
1997	224458708.2607154
1998	167910908.78924108
1999	163967903.38109133
2000	144450769.71961302
2001	97877409.65538932
2002	104003646.88568528
2003	149641404.19912538
2004	166338354.3912791
2005	172751917.59542292
2006	189474730.00048098
2007	214270778.8813382
2008	244840000.22199515
2009	245150801.20004338
2010	291574146.99309975
2011	349196382.4286024
2012	395126270.78450316
2013	432298225.1081362
2014	464222351.6323643
2015	434521179.5435045
2016	475192160.99639755
2017	489147867.6723225
2018	548757907.0997126
2019	528996565.5659292
2020	524130468.0526841
2021	533641971.96474314
2022	528733329.254301