Year	current US$
1984	639.4847301614174
1985	639.8659037555516
1986	693.8734746338873
1987	674.7933830694916
1988	652.7743213965662
1989	697.9955965765195
1990	617.2304355155054
1991	336.5869945046292
1992	200.852219772323
1993	367.27922507758115
1994	586.4161351308651
1995	750.6044491788258
1996	1009.9771105339804
1997	717.3800477456734
1998	813.789396580449
1999	1033.2425316241793
2000	1126.6833401071663
2001	1281.6598256178013
2002	1425.1242186014215
2003	1846.120120812074
2004	2373.5812917005464
2005	2673.7878158352933
2006	2972.743620947361
2007	3595.038295364044
2008	4370.53971639449
2009	4114.134032830229
2010	4094.349685704815
2011	4437.141160970613
2012	4247.631343159448
2013	4413.063383468215
2014	4578.633208121549
2015	3952.803573648134
2016	4124.05538986272
2017	4531.032206758928
2018	5287.660800675748
2019	5396.214243284299
2020	5343.037703995597
2021	6377.2030955375285
2022	6810.1140410423295
2023	8367.775731434209