Year	current US$
1970	3871259316.31664
1971	4938000511.32426
1972	6004086370.74633
1973	8313902356.28152
1974	27026185333.4754
1975	34421989243.7315
1976	48822043331.498
1977	55125514502.6252
1978	61083415016.1439
1979	58763404426.2967
1980	98603841978.2829
1981	123339392629.539
1982	124465699895.952
1983	110874700075.475
1984	100913869762.419
1985	93864608657.9105
1986	79904992585.2044
1987	77695661334.6784
1988	82105904349.3278
1989	86249648810.3185
1990	95386613381.3495
1991	108101004199.453
1992	114092656016.795
1993	110568164534.244
1994	110056185271.554
1995	116964813834.224
1996	124230262386.65
1997	132650853252.777
1998	120073589269.399
1999	133638032819.378
2000	148829085891.885
2001	148665573369.831
2002	156404054635.785
2003	170657457934.94
2004	197685471771.857
2005	250455505718.936
2006	289018300633.62
2007	324878834419.179
2008	395203007130.125
2009	353406338063.88
2010	430666443925.09
2011	524049717125.848
2012	573183988466.753
2013	582966076999.36
2014	599085982691.053
2015	529731184587.035
2016	536121085525.7
2017	568764219859.27
2018	670840756388.555
2019	666881142022.419
2020	594398239743.762