Year	current US$
1960	1.1488281668960485
1961	2.2194097077030053
1962	3.0559426126802407
1963	4.227419538916584
1964	8.15966309145739
1965	8.292784408736722
1966	7.5666391818944465
1967	6.992938834955778
1968	10.657601075792236
1969	6.093695329858376
1970	7.950028000824991
1971	6.646311730943241
1972	7.433243259411633
1973	5.9264580037807635
1974	8.061627410555843
1975	11.906914942271952
1976	11.338256234185947
1977	14.061663118511678
1978	16.907077195582694
1979	23.45608132651506
1980	22.52619762388029
1981	20.957405482645036
1982	17.721676582423335
1983	16.362257159004052
1984	24.706357529841117
1985	14.74870146698473
1986	24.588426801316693
1987	33.24978653404011
1988	42.902273181192776
1989	45.48280800957057
1990	52.450477595551106
1991	55.8984195552028
1992	57.14443671417934
1993	48.48676015626154
1994	46.501121335750746
1995	43.02857034563252
1996	47.77059026898739
1997	32.73190771214681
1998	40.5014465166017
1999	40.712756528210704
2000	39.9086783540797
2001	35.75150125026033
2002	32.22368829239693
2003	42.98242155104015
2004	40.883573543274686
2005	44.97223695840956
2006	55.10390899657921
2007	49.34398937703405
2008	62.80246328644063
2009	48.394522768160236
2010	69.08688822660065
2011	52.705339693314656
2012	75.14865360808898
2013	70.67494232075832
2014	56.509400076716446
2015	61.975538308598615
2016	71.33383930111096
2017	85.01793930469583
2018	69.64874769880285
2019	61.885256268627636
2020	75.0542074494522
2021	59.2345558921624
2022	65.92595401651344