Year	current US$
1980	448.39713065121464
1981	433.623961136589
1982	430.9607438839855
1983	418.39368289174223
1984	393.5310400289383
1985	405.2331299650324
1986	553.7822458452351
1987	674.6226598851216
1988	748.2543824760127
1989	746.7501644970305
1990	841.8050176499887
1991	858.0870372017534
1992	935.1061412379553
1993	1251.8663472850455
1994	1012.2633910458898
1995	1184.1767348428193
1996	1192.329984641447
1997	1139.217696631115
1998	1185.5837400102407
1999	1317.5736845404704
2000	1176.707257870492
2001	1208.4576085771002
2002	1311.2145811795383
2003	1693.9785516307052
2004	1900.8884647365333
2005	1972.7849263690136
2006	2220.098174938743
2007	3268.3056955596167
2008	3839.863635557314
2009	3592.3158789212694
2010	3500.977467766606
2011	3880.069205209055
2012	3583.461725109974
2013	3757.659953262334
2014	3739.2782789021885
2015	3169.0789008256347
2016	3312.6967445848677
2017	3534.343574788173
2018	3860.4548075811017
2019	3903.0503168362548
2020	3126.3998587225915
2021	3489.9733973645925
2022	3883.9111591716105
2023	4321.579864277863