Year	current US$
1975	3592946812.9968214
1976	4189308973.0963297
1977	4848194259.761759
1978	5370778039.984329
1979	5928172365.713049
1980	6947903416.744975
1981	7237256443.859873
1982	7082852792.935958
1983	7103250266.257876
1984	7206815223.232104
1985	7478717291.638688
1986	8547892389.262895
1987	9532095491.357468
1988	10160612271.501242
1989	10523577007.09285
1990	12252118382.744375
1991	12535966975.846087
1992	13117545911.772736
1993	12267326680.336
1994	12445442761.904558
1995	13858838425.614641
1996	14082186403.100176
1997	15046386109.360966
1998	15530063606.439205
1999	16113589620.730381
2000	15576119316.328264
2001	16526027963.618345
2002	18439631168.26295
2003	20926792924.187496
2004	24331657202.284393
2005	29008482342.783844
2006	31558082590.682453
2007	41134083001.44981
2008	47551148936.442665
2009	36780926370.19524
2010	44949753608.47173
2011	47624943574.25263
2012	52327787391.64693
2013	56209713698.52652
2014	57424029965.89919
2015	47159327896.20688
2016	48240583289.154655
2017	49721397071.30394
2018	52075994231.680466
2019	52513940006.56073
2020	39423109782.91965
2021	41939121781.9313
2022	57128170451.76229
2023	60914186165.93494