Year	current US$
1983	1293751454.5031419
1984	1323045819.6911957
1985	1391118668.1956582
1986	1747302455.1950023
1987	2132612339.3726554
1988	2239242190.529055
1989	2263892153.2958345
1990	2600447718.8230023
1991	3172526333.6840687
1992	3191828781.4250937
1993	3165600549.289385
1994	3298914514.255488
1995	3800607339.7385416
1996	3952071374.2999883
1997	3567320921.689676
1998	3597513530.712667
1999	3219948409.513815
2000	2857168390.4713483
2001	2648791477.6933036
2002	1779749933.280698
2003	1791295970.8186305
2004	2039620151.3388472
2005	2578812726.218003
2006	2871071958.469608
2007	3268658411.80775
2008	4651410535.245612
2009	4846915202.834032
2010	5675180623.427318
2011	6410302105.061725
2012	6601778831.963152
2013	6910436206.961875
2014	7467667809.87287
2015	7638410491.577912
2016	6315284816.295677
2017	6678235566.528574
2018	7239983058.063076
2019	6582319265.629085
2020	5193130961.459602
2021	6216219795.585147
2022	7075243296.391653
2023	7304991368.530245