Year	current US$
1960	0.327332234909413
1961	2.7673704707005387
1962	4.982767816210231
1963	3.037205891378679
1964	2.765677948579064
1965	1.1476005328480672
1966	18.305078597193898
1967	3.287515480362622
1968	2.4989443395061572
1969	1.4217732170390236
1970	1.9473722210233604
1971	6.689437173137252
1972	4.885869041109131
1973	4.298206486665918
1974	4.390258048603142
1975	22.70726492740662
1976	20.411207790593622
1977	24.04606366190201
1978	51.9147596953676
1979	39.170192045010474
1980	126.81412026061544
1981	74.67744927470278
1982	30.139295272725317
1983	55.36999930397615
1984	28.0387014138336
1985	44.699370368582485
1986	77.1707454279569
1987	74.85704195643213
1988	120.0511478569317
1989	124.25609200689236
1990	69.56884924021168
1991	116.39026688677019
1992	129.42426386215166
1993	107.95420250778866
1994	109.00035991577433
1995	203.2857296383799
1996	100.40137723522197
1997	87.2732662140808
1998	90.68795717872467
1999	109.3807870824739
2000	64.21079615601879
2001	77.61272722452877
2002	73.66123594396375
2003	57.195534710960686
2004	88.10631287084713
2005	235.78421913258634
2006	108.42840879191827
2007	91.44147051369714
2008	148.12264651489954
2009	70.22178230067814
2010	244.15404488500837
2011	133.07873579493298
2012	146.38526584998232
2013	54.15144627512801
2014	54.08674254694149
2015	55.07573722311345
2016	49.99427428932112
2017	98.38244597693749
2018	268.35701035160423
2019	140.88974175048702
2020	604.8542363941018
2021	215.56907599688756
2022	227.42069342420106