Year	current US$
1960	1208333333.3333333
1961	1600000000
1962	1763636363.6363637
1963	1553333333.3333333
1964	1970588235.2941177
1965	1893103448.275862
1966	1805555555.5555556
1967	1597142857.142857
1968	1592672413.7931035
1969	2004435483.8709676
1970	2137096774.1935482
1971	2807258064.516129
1972	2188700564.971751
1973	3964994165.6942825
1974	4091438979.96357
1975	3538014311.270125
1976	3667716535.433071
1977	4114374865.5046268
1978	4910526315.789474
1979	7181487624.393978
1980	10162460046.291195
1981	11048642638.747335
1982	9179000938.424889
1983	5102251570.863394
1984	4850267475.354695
1985	4732017873.383685
1986	5880112788.4094715
1987	7367494080.400138
1988	8213538368.846354
1989	8438951476.066442
1990	9298807850.299791
1991	11206176650.907509
1992	12878148790.734764
1993	15002136971.174488
1994	17474588895.891823
1995	19297663096.550636
1996	20515458113.58567
1997	23969739233.896637
1998	25385886977.522835
1999	23983945190.62023
2000	22823270892.10942
2001	20898761742.238617
2002	13606515722.586388
2003	12045638351.85074
2004	13686329890.119078
2005	17362857683.85447
2006	19741420739.890133
2007	23797773024.39923
2008	31119602538.832172
2009	32708319077.517914
2010	41950361211.95806
2011	50342406067.07767
2012	54232266358.781075
2013	61337621933.78566
2014	61496186973.90199
2015	57680327998.668884
2016	57480788380.31204
2017	65006047680.322495
2018	65344408987.196465
2019	62222387928.99324
2020	53668636567.86667
2021	60760798595.54362
2022	70164683290.37762
2023	77240831587.16696