Year	current US$
1968	1006952990.3568815
1969	1028823146.6886064
1970	1226962129.015897
1971	1060357143.6715797
1972	1448569959.1353061
1973	1941034804.0619137
1974	2384509628.95971
1975	2188435395.170156
1976	2872345325.5512323
1977	4093586018.007354
1978	4643497705.077131
1979	5377149759.214822
1980	6496192157.924459
1981	5964578246.041565
1982	5517328441.178138
1983	5576662403.702882
1984	5757148083.418057
1985	5877716524.724568
1986	7718462868.988494
1987	7751963905.778365
1988	8794416888.80659
1989	8151582123.065076
1990	9990324113.0092
1991	11385452474.477898
1992	11144777332.915749
1993	11900627811.837599
1994	15606906321.578173
1995	17118310230.52378
1996	14679222415.9734
1997	14396777094.568762
1998	12678623258.736229
1999	11681853901.272686
2000	13558010136.335182
2001	12603694252.741566
2002	13639405587.702333
2003	14572008233.233648
2004	19704738564.531166
2005	26825542179.723503
2006	30758090997.098278
2007	38438402059.03891
2008	47453718046.624344
2009	43401891588.363174
2010	52875921710.821526
2011	64801062614.98634
2012	68100887330.593315
2013	69502076819.13782
2014	69218453955.55588
2015	50979235162.27502
2016	49413415638.84306
2017	53335871032.51564
2018	54693484976.14209
2019	52262994982.03916
2020	39031434409.60765
2021	41598913754.751724
2022	46761327812.65039
2023	39236360623.18933