Year	current US$
1968	33754416305.15288
1969	38057826705.911026
1970	43065033932.52258
1971	48401806615.675575
1972	60579518525.62427
1973	74208921286.49583
1974	111615443094.94655
1975	156858759209.00473
1976	221461665843.39474
1977	246545976329.31793
1978	277965395789.8904
1979	361646752515.0269
1980	458452495406.3533
1981	512019463190.43506
1982	490638133210.09766
1983	445587042226.5782
1984	445177730010.4376
1985	445125327454.13855
1986	465613919048.08813
1987	481708824941.96735
1988	502675906022.3444
1989	509505725767.32196
1990	589995433844.1096
1991	483598404357.753
1992	501479215845.80585
1993	495790566813.31055
1994	508652614725.6226
1995	530885417455.83295
1996	562955314212.4474
1997	601341593380.0057
1998	612030946665.6531
1999	622591625026.0763
2000	693614627853.7909
2001	737815972917.898
2002	738537888846.4749
2003	804373178979.4678
2004	956700494441.2389
2005	1121726118023.6316
2006	1328616073262.2063
2007	1562208468084.7905
2008	1873560099171.214
2009	1942854752608.771
2010	2091259708938.5618
2011	2251621545189.452
2012	2622025376111.921
2013	2849927288904.6333
2014	2931394687602.394
2015	2811372822391.1343
2016	2685185790720.6816
2017	2556493683439.7905
2018	2715856070202.931
2019	2871153180291.137
2020	2692262840182.303
2021	2923836896564.0796
2022	3309638806929.4224
2023	3468998646788.05