Year	current US$
1975	1774729502.5501418
1976	1421613487.30284
1977	1790658478.2486846
1978	2121702440.4496422
1979	2512295330.845061
1980	5392715075.363825
1981	4015724158.664043
1982	4155335383.810928
1983	3560857977.288923
1984	3747931797.193669
1985	3787065305.9539104
1986	5159502603.461092
1987	5642948924.999874
1988	6936931710.67554
1989	7299493424.377687
1990	9186657551.790874
1991	8445881675.290439
1992	8957450897.460587
1993	7876248462.39997
1994	8460604207.440401
1995	8526252004.516697
1996	10612052584.202536
1997	9693710453.640081
1998	16195323244.0986
1999	15252781734.541868
2000	13949393457.867624
2001	16907049285.696901
2002	17872438740.828136
2003	22763789808.463005
2004	26020399352.899803
2005	26700041837.13328
2006	30295765238.792168
2007	34725440844.709305
2008	40922939355.3426
2009	35920852830.5971
2010	35347349947.16193
2011	37163265498.02672
2012	33485160092.78438
2013	37784040841.12681
2014	30161316391.058754
2015	31201398078.48441
2016	31541553863.583252
2017	33893101826.59501
2018	34790318526.70258
2019	35105709990.86616
2020	33609925861.034584
2021	40016995915.526855
2022	35057715630.898796