Year	current US$
1960	0.4246915582563269
1961	5.3858102633507405
1962	6.463601697653774
1963	8.074044829139838
1964	5.375105605315461
1965	8.045805088551699
1966	11.391195795700229
1967	26.004727178539916
1968	23.058492395917387
1969	24.501100689433102
1970	37.95462971180946
1971	43.392841237772785
1972	70.63047408225631
1973	98.51809944538847
1974	92.03812992821354
1975	93.2838870607682
1976	65.9923730570965
1977	103.01532835165375
1978	171.36129791277727
1979	151.5683884503003
1980	313.41981921533886
1981	247.27273035531152
1982	239.77008084649475
1983	256.078353055846
1984	177.23223734589521
1985	177.19013753709
1986	193.5077496579117
1987	249.90706462465758
1988	221.6796922896596
1989	230.5408832885206
1990	256.6423604526583
1991	249.5692690340077
1992	327.2101740814393
1993	192.55812198596968
1994	177.66371260941145
1995	178.3237777269695
1996	155.61619112568573
1997	186.57778078279998
1998	203.018473006164
1999	240.35101263889263
2000	190.59735105910207
2001	122.27855314559875
2002	217.7489268315303
2003	172.10663127225615
2004	151.31360595710737
2005	271.3825780290982
2006	254.9883642353217
2007	269.7111730512539
2008	259.5079116464642
2009	237.27310104655174
2010	220.10278677497757
2011	587.4161600015227
2012	588.345949299802
2013	573.554181533739
2014	701.4828339532061
2015	556.5218619983566
2016	513.3614046778657
2017	640.9830471899678
2018	654.5832177006315
2019	456.0491290911382
2020	459.02753561959224
2021	565.3584168284651
2022	694.1904297284283