Year	current US$
1973	0.5107982831565097
1974	18.96891173654602
1975	28.30237225338342
1976	28.104690265757018
1977	34.67283906372235
1978	27.0323857821055
1979	29.81877652894007
1980	40.595540865819295
1981	63.64075468672723
1982	63.70812455059802
1983	75.57778376090072
1984	275.7533710108063
1985	342.12933351308567
1986	237.28108524929974
1987	190.1609276510363
1988	200.54667928197182
1989	147.64572702703276
1990	139.32779580133572
1991	164.89906336273282
1992	127.96912416048892
1993	77.0262191142384
1994	228.8367283458197
1995	103.97847102464155
1996	113.02291342988478
1997	84.13154188519948
1998	58.94538821922637
1999	97.35730712047311
2000	157.02957069805456
2001	104.59902128903241
2002	94.42766182543633
2003	99.1355502388376
2004	142.44494303544414
2005	477.08018279718743
2006	241.55764105977585
2007	155.6500281015744
2008	275.3427275854345
2009	381.9901131271199
2010	296.828264664905
2011	104.68333710098679
2012	66.08461459911062
2013	107.14438182881868
2014	336.6052884114256
2015	202.55505447528745
2016	71.52026343885808
2017	48.29599616764573
2018	260.50985547299035
2019	119.6180071149555
2020	562.8199095454671
2021	546.8260925258678
2022	-746.5042442453514