Year	current US$
1964	34184553246.02735
1965	37201663376.41025
1966	39424580790.37735
1967	41217007694.29781
1968	44255455091.67343
1969	48697811760.47224
1970	53164703929.30336
1971	59635726885.359924
1972	64039166293.73639
1973	80996999964.20264
1974	95407255231.54166
1975	112443826198.96431
1976	114373549844.14507
1977	128174062097.69592
1978	149664534393.5977
1979	179433370032.57312
1980	223392867364.01462
1981	235129085972.38776
1982	224400835230.78052
1983	233915664281.3515
1984	222165629768.96616
1985	191619125777.95135
1986	229524390074.27173
1987	282524117193.2361
1988	302025630506.42883
1989	315292713011.9707
1990	381724386084.6097
1991	408622373564.21936
1992	375804823215.9367
1993	371043978285.06757
1994	357886381496.32666
1995	408074259092.18604
1996	418860750444.82605
1997	436398100625.07794
1998	425790322396.0388
1999	424729646357.17224
2000	430252289391.0986
2001	398543956246.0921
2002	403395744110.30273
2003	524927928482.7857
2004	641832531096.9172
2005	724819215729.0751
2006	806899855521.3705
2007	926737529653.7697
2008	1007149914259.6326
2009	1048708356772.4089
2010	1195849428955.0776
2011	1337369340609.143
2012	1388662346772.7517
2013	1462427005495.2246
2014	1475824699429.616
2015	1375435909014.398
2016	1305443653226.6191
2017	1445585841144.632
2018	1567778170763.6116
2019	1562953571970.0159
2020	1491977905707.7268
2021	1696922191787.9612
2022	1800817095185.4458
2023	1937887338474.6062