Year	current US$
1975	12397956928.90036
1976	14495881322.92202
1977	16738958543.9854
1978	18832898901.274273
1979	24664560600.98604
1980	30783216438.892498
1981	36546615461.223946
1982	36764383649.05893
1983	38800874722.501755
1984	43118759778.000275
1985	43618734080.54927
1986	44139805956.108505
1987	50237191492.26888
1988	54362552680.31207
1989	57395925180.02769
1990	61881260582.38952
1991	51683129563.49356
1992	52307156329.671486
1993	53222686759.497505
1994	56852111336.23493
1995	64665610283.78303
1996	71983398040.6224
1997	78326995725.83537
1998	78789622419.31012
1999	84898357731.40947
2000	98529906587.76547
2001	83850775522.03319
2002	86189317162.35886
2003	94903654339.4892
2004	105938883358.6633
2005	119300389468.70207
2006	134614723558.15631
2007	153332673829.3039
2008	184396613042.40778
2009	179857359528.42776
2010	210652687919.03027
2011	239300006959.65906
2012	259681136637.6483
2013	267426974514.49228
2014	287051780044.98663
2015	271766502863.35678
2016	272239837330.90482
2017	273102998652.7187
2018	295627070356.60425
2019	297423435616.78613
2020	284233933670.9085
2021	335942648439.9075
2022	424647680450.3371
2023	396429975216.3265