Year	current US$
1963	360110517723.1753
1964	410130520378.12933
1965	466637039149.03766
1966	517178906211.7125
1967	504480869068.1321
1968	506157220422.50867
1969	573378003287.9652
1970	655989670327.0552
1971	705199237935.8905
1972	775858398517.8408
1973	950650836817.69
1974	1146278384603.7515
1975	1332818458671.6667
1976	1358712912963.1816
1977	1462960733043.7297
1978	1593569387678.8948
1979	1876520644493.847
1980	2165734113081.7678
1981	2342633642644.6265
1982	2278179875054.233
1983	2216011710047.8237
1984	2356700824308.1353
1985	2522059700711.136
1986	2698743553563.866
1987	2921571036025.484
1988	3178657431486.398
1989	3301129701526.8174
1990	2214363956950.6772
1991	1981850073882.8218
1992	2038092267449.584
1993	2116824253560.7395
1994	2273271301001.272
1995	2627148870111.016
1996	3058703000266.5537
1997	3384683718363.335
1998	3321419402909.472
1999	3222095935155.7505
2000	3338613084032.562
2001	3388282143021.9224
2002	3572858267427.8765
2003	4005357077654.644
2004	4784002271659.961
2005	5691347443834.625
2006	6791273047182.973
2007	8305744780489.067
2008	10129424479871.238
2009	11135198603618.2
2010	12603772852575.193
2011	14296355129692.742
2012	16549570800169.248
2013	18430848543496.496
2014	19467397797356.88
2015	19203391223547.95
2016	18967412904103.496
2017	19557728890265.01
2018	21493750851396.02
2019	23128796695522.105
2020	22917358230266.75
2021	25480853255652.152
2022	27482395008708.832
2023	28854673591336.08