Year	current US$
1970	8370234252.94298
1971	8524770849.79155
1972	9798356367.72201
1973	14224282115.7272
1974	20178871217.821
1975	24431913516.0277
1976	30122985505.0541
1977	36322055885.0434
1978	41382232260.9025
1979	34398740029.5122
1980	51429556445.8066
1981	66087465186.1439
1982	75633104013.7771
1983	66204012688.9256
1984	68676328742.3357
1985	70183333054.4642
1986	68773539877.6245
1987	63054074794.8172
1988	71640494275.7966
1989	77662098935.4558
1990	85781596828.9499
1991	98765485751.405
1992	108634459387.19
1993	137197125815.947
1994	156806116220.115
1995	178476280992.871
1996	200641785517.516
1997	190577768967.454
1998	80551240887.4718
1999	115375774751.776
2000	133145521834.295
2001	115314370081.832
2002	144602863266.849
2003	172062112722.906
2004	183109877063.281
2005	199835483807.503
2006	260413548258.79
2007	309433498812.341
2008	365686093364.474
2009	401915526053.327
2010	566234391128.885
2011	659868014153.763
2012	689395586501.512
2013	688615753233.48
2014	671349773485.428
2015	663588563945.298
2016	736332319283.818
2017	785282040778.049
2018	789841225160.877
2019	839487253839.715
2020	806178618150.759
2021	882648696180.561