Year	current US$
1960	48341345.53120619
1961	52322628.89624012
1962	57972564.17148433
1963	72764821.72408159
1964	90352324.33638874
1965	97934826.28283788
1966	97688670.98417757
1967	130487347.97913657
1968	142588991.30422854
1969	173872519.60753095
1970	160996725.59070846
1971	253126077.95501962
1972	314647528.701288
1973	425323421.8189942
1974	888640846.7990326
1975	1068531105.6870584
1976	1371832275.852085
1977	1449448281.0050144
1978	1475698437.4347734
1979	1772269116.1600838
1980	2769790006.4206405
1981	2447269142.597195
1982	2228502937.2219524
1983	2079692035.3195686
1984	2104556519.112584
1985	2089867354.5898328
1986	1197784950.267553
1987	1401160634.824857
1988	1408435482.368958
1989	1917191502.281262
1990	2740347018.359201
1991	2553606793.0899205
1992	2576724991.56859
1993	2136542944.381677
1994	2584714650.900575
1995	2944909616.9242454
1996	3568070236.7106338
1997	3265552539.563443
1998	2125424573.8984344
1999	2779726330.6053233
2000	3507168436.0988245
2001	2726388981.1296825
2002	2806922117.4011145
2003	3381594592.5581675
2004	4276662905.284252
2005	5750501486.118675
2006	6255613897.1935005
2007	7289977426.955951
2008	9685333826.460342
2009	6319926635.461368
2010	8287739080.531213
2011	11243840178.750994
2012	10465456444.299395
2013	10092462761.826277
2014	8104568513.241109
2015	6620833388.516613
2016	6175468782.2186775
2017	7498596948.541458
2018	9158802458.423391
2019	8678687828.887703
2020	7275153456.6207485
2021	11229488167.860693
2022	12934645038.488302
2023	11631889368.156374