Year	constant 2015 US$
1974	6708374272.009056
1975	6732220065.029623
1976	8089125568.097789
1977	8972190900.81947
1978	9580131700.308182
1979	11741642090.670454
1980	10920114268.139013
1981	8755014240.08978
1982	9101419943.3764
1983	9147060466.802233
1984	9201931536.799923
1985	9064753827.041922
1986	8818603160.533049
1987	8995780345.776892
1988	9094497085.593164
1989	8996805946.61209
1990	9094818998.132448
1991	9380936670.76305
1992	9827336126.30849
1993	9857267526.399971
1994	10167317762.4289
1995	10622682169.319403
1996	10928436715.428885
1997	10767660661.187532
1998	10707522323.33866
1999	11034332730.619076
2000	11348747419.310724
2001	11660161646.7426
2002	12111654412.21843
2003	12463371463.820574
2004	12526226521.012846
2005	12574766551.70125
2006	13127769534.74784
2007	13148062678.736069
2008	12893027782.363365
2009	12665525724.790527
2010	12994698399.983398
2011	13481391223.952816
2012	13604454980.870796
2013	13315220388.3404
2014	12981227716.001574
2015	12930291487.95813
2016	12609889504.146011
2017	12777424817.854198
2018	12784099462.297207
2019	13278730315.75311
2020	13429254463.76773
2021	13215626906.16552
2022	13000432684.362951
2023	13183357642.33033