Year	current US$
1975	1093174142.0345948
1976	1191307663.5098116
1977	1354814879.69679
1978	1567362946.083469
1979	1967392093.569805
1980	2513627395.0228
1981	2557611084.3640847
1982	2477228357.7842755
1983	2443173529.880128
1984	2604751991.1502385
1985	2837687418.482939
1986	3233788799.695753
1987	4383520128.534015
1988	5379932079.209751
1989	6085239147.617217
1990	7471684264.364075
1991	7522525788.79324
1992	7434896016.381924
1993	6455361058.245165
1994	7102971842.140551
1995	9400071709.285542
1996	8664482866.199131
1997	8092278329.694115
1998	7471000300.679519
1999	7533000728.351748
2000	8360146224.829813
2001	8031699528.018533
2002	9649296874.381079
2003	11879122260.866468
2004	14295213003.906584
2005	17335670834.1795
2006	19267908887.5336
2007	23352309681.4266
2008	31857192578.17093
2009	28131245149.151947
2010	27507192165.656532
2011	29863222246.868076
2012	31485162440.4062
2013	31340773677.09349
2014	30776414113.928482
2015	27542344640.19166
2016	28412128906.102245
2017	30402905539.22352
2018	35431087913.5073
2019	36511985612.14787
2020	32807520996.271175
2021	36473674713.49215
2022	41240868894.06128
2023	43701820698.64809