Year	current US$
1960	0.07425343934737244
1961	1.369137277274163
1962	1.7817275837011592
1963	1.6397939347391963
1964	4.996212386697801
1965	5.673024762595311
1966	8.335077338777047
1967	6.336309514882645
1968	7.811080964864596
1969	5.973371526386632
1970	9.185178506242915
1971	7.271382773915517
1972	9.231264558457665
1973	8.698773408403861
1974	8.602168984968845
1975	14.818686407239445
1976	17.775664627531516
1977	23.013212772606924
1978	22.41529280550297
1979	33.58089862009453
1980	31.075516079445734
1981	22.456555256292752
1982	23.43100737942327
1983	13.815012984132432
1984	19.24474505558291
1985	15.552432212337523
1986	21.407709968716997
1987	19.467303480066956
1988	25.617188050382023
1989	40.818913526709444
1990	38.876621963201416
1991	43.833615810126304
1992	58.93341305370964
1993	43.54367383015011
1994	56.92410527442283
1995	33.60595315893431
1996	30.30351282096936
1997	35.869270871570635
1998	34.837860455707215
1999	29.55852840782332
2000	24.991396115089564
2001	29.56706356876061
2002	38.06326091157251
2003	54.15203262532421
2004	46.44661112877896
2005	24.112062829648515
2006	96.68231620883795
2007	103.98224461636909
2008	27.823814159774408
2009	30.858301049228402
2010	27.17723121483179
2011	29.93221274785383
2012	28.39200042869141
2013	34.76009966197963
2014	38.39174563639583
2015	28.860652232017603
2016	31.907972031255085
2017	49.8827950658887
2018	46.4713375935858
2019	50.3247548480714
2020	52.869478186722205
2021	41.94917335306398
2022	42.18482966326433