Year	current US$
1990	17781294191.61479
1991	16923413712.140793
1992	12934778570.715332
1993	10310246564.255722
1994	4561177331.342728
1995	6924240659.979187
1996	12148160337.835968
1997	13541403659.821365
1998	9695202217.615631
1999	11725267212.250443
2000	17248358178.933594
2001	18869615501.959473
2002	20616067210.91507
2003	23524241950.521652
2004	31000678388.407745
2005	37743632979.87808
2006	43798058781.41846
2007	57947248507.559906
2008	63318152172.337585
2009	49945586562.9895
2010	68561245234.443115
2011	63162848937.43988
2012	34335060606.00128
2013	32045715763.855164
2014	40565793004.7558
2015	35781263337.93579
2016	35205612190.13104
2017	44060297738.277466
2018	40689611626.42621
2019	44232661624.83667
2020	45724160122.05536
2021	48926135283.3595
2022	51462970584.40344
2023	53629038872.60095