Year	current US$
1989	65963601563.00001
1990	74262290910.00002
1991	61313068181.818184
1992	55999436763.95289
1993	65055189800.66359
1994	93861019672.50603
1995	161005442824.03094
1996	167966249427.9176
1997	172536930886.31454
1998	173351340738.65353
1999	118625327396.32611
2000	123013513113.15097
2001	108319286509.54701
2002	100988722395.1269
2003	106496922769.47823
2004	123601586191.878
2005	168429645003.4711
2006	210880097291.11993
2007	264655224138.1613
2008	319488801739.80664
2009	327575442326.5054
2010	420051533827.0729
2011	488416927312.9531
2012	456809257583.83344
2013	467176911342.71356
2014	470419286028.78424
2015	356420263373.9958
2016	365949715737.3172
2017	416043923131.9028
2018	381375681758.15753
2019	374350071200.9291
2020	297216449690.6897
2021	309864802505.41254
2022	359197195955.8247
2023	396016091887.2813