Year	current US$
1992	230.8757767795944
1993	272.0507930553477
1994	140.21193330201547
1995	130.37573030101456
1996	130.816542074946
1997	135.88888910069628
1998	135.47739036100864
1999	99.75725083208819
2000	392.62633378413057
2001	148.44712350962334
2002	168.94480527387947
2003	167.98157540928213
2004	187.856781029954
2005	211.57262966400128
2006	247.54193564632968
2007	277.61207955153384
2008	317.8892100811303
2009	290.15567507352506
2010	324.82772610927077
2011	376.3749811299729
2012	412.77626054499467
2013	444.8643575590964
2014	472.2662357255325
2015	482.0645686382378
2016	456.02795058362364
2017	451.0890885173187
2018	546.2125932038832
2019	575.882781366465
2020	524.6666862114951
2021	576.974729394136
2022	664.5935433366956
2023	649.1439879393581