Year	current US$
1990	111463392.500196
1991	117345536.0694
1992	109474366.906287
1993	97039606.2405861
1994	85626358.5614509
1995	99889806.2004545
1996	105693581.585803
1997	104637964.65717
1998	111566925.804436
1999	114417373.892354
2000	73638230.3800381
2001	77569550.6688042
2002	88007821.453572
2003	106764333.914585
2004	119641740.824456
2005	139304878.665643
2006	254501803.177484
2007	301437813.526278
2008	317407440.443347
2009	278523862.742055
2010	324689839.406321
2011	360044253.369266
2012	357553337.279034
2013	527945710.887278
2014	471029485.563895
2015	438209306.675454
2016	498676059.417668
2017	500063569.756343
2018	513347071.156474
2019	489097088.012349
2020	491216903.018517
2021	510921391.376999