Year	current US$
1981	55422401.10141344
1982	48525667.064131625
1983	40305846.9060004
1984	32477152.992501795
1985	34053490.174566515
1986	30816013.525544006
1987	37784123.035169065
1988	43616808.302040584
1989	57861844.460593365
1990	70846626.06587239
1991	140393714.01423612
1992	177058842.37523347
1993	39849221.3272179
1994	34976926.49928703
1995	54263099.35862007
1996	57503853.40750847
1997	41589387.70316211
1998	41042910.430231795
1999	38740512.14329819
2000	35720425.02028328
2001	76802605.0352779
2002	42085860.27841895
2003	48893258.4025493
2004	137728557.0605982
2005	142150076.95596424
2006	165397473.25251707
2007	160814150.583878
2008	164335908.54506168
2009	186943871.53814647
2010	214158569.5878267
2011	181796458.56697142
2012	295412925.60613424
2013	202373240.45131284
2014	204737492.6323226
2015	280456377.10143423
2016	369956028.38737
2017	345523099.4572304
2018	348783167.54265016
2019	399686471.6658656
2020	498496495.0644309
2021	611692149.0660696
2022	717908827.7858176
2023	918412438.6252046