Year	current US$
1980	136.1755022357808
1981	65.23875491984475
1982	59.24424745430432
1983	82.98906516492707
1984	100.84190345355914
1985	121.14146582553578
1986	135.84560064339829
1987	161.73461144600586
1988	172.53311159857756
1989	135.09393042654455
1990	199.8589954596023
1991	206.15798056036527
1992	248.87369969330425
1993	232.83400615999662
1994	106.09603060999866
1995	114.27899714618682
1996	146.85676288991974
1997	233.82819429862442
1998	135.6592733199848
1999	214.48021012678063
2000	-115.77516230854744
2005	115.44515386140975
2006	3394.0936925071846
2007	4632.460793651085
2008	6091.723716307431
2009	4574.869275335388
2010	2281.473713497712
2011	4223.899984291562
2012	4229.165848260558
2013	5156.220080853296
2014	5265.87369415803
2015	4149.27019753246
2016	3461.5485367136666
2017	3085.068629680298
2018	3242.0173320499157
2019	2534.3104981368692
2020	2412.8841373862706
2021	2915.3792227623762