Year	current US$
1978	49980113.6256361
1979	50201168.310905576
1980	38670612.74223902
1981	37014657.993922584
1982	40285577.174337626
1983	37703593.68430994
1984	30448922.56893309
1985	27122466.382585626
1986	26869566.318666782
1987	33294707.740160637
1988	42892886.177714646
1989	42971990.62308959
1990	45822658.59161313
1991	64087362.35169071
1992	79253815.59719461
1993	85361666.50386418
1994	94499084.38772935
1995	104746411.88004835
1996	99576224.3821869
1997	120985306.16205627
1998	131610607.87842774
1999	116556595.30185546
2000	121360642.67912711
2001	122383654.95561332
2002	111464568.73209234
2003	115101326.12780455
2004	137625280.1013075
2005	158412670.04431352
2006	171532227.54504448
2007	185238129.29390344
2008	194569156.01452678
2009	198060556.25893515
2010	221285548.96145442
2011	231939295.64030826
2012	295895282.9775495
2013	345951936.20373386
2014	375984494.7671511
2015	408508831.8378211
2016	355182435.4927517
2017	376287858.0219716
2018	398078398.85225326
2019	446857696.6588708
2020	386782187.554304
2021	407361080.12670344
2022	435535531.9989111
2023	497790209.7144213