Year	current US$
1976	47271729.8995412
1977	52502364.4503524
1978	79443429.6506932
1979	97498046.59805179
1980	171718372.0669396
1981	186692770.7069427
1982	182180829.7050595
1983	164158618.0205593
1984	175536992.2558236
1985	207380336.4074857
1986	188693028.0797026
1987	211295681.36173302
1988	232376645.93077022
1989	267895878.5249461
1990	295623196.95688444
1991	344284220.3514967
1992	392688655.8058095
1993	434871784.8811348
1994	418803663.97824204
1995	468517965.7590749
1996	223402371.70607895
1997	266677486.08249402
1998	252282750.53941393
1999	266793593.643847
2000	283923140.100824
2001	244322182.87819397
2002	352350930.13833
2003	499933347.65165806
2004	476839317.238989
2005	722137474.3070239
2006	922472827.7393419
2007	1021197581.245624
2008	1099973227.90031
2009	967842118.7322601
2010	1236301534.3493898
2011	1418749499.3802202
2012	1351755630.72969
2013	1525592220.82004
2014	1639436522.3055902
2015	1676663306.33498
2016	2007595554.2457502
2017	2274250956.51481
2018	2973493550.9518404
2019	3178109448.2607694
2020	3079368960.25814
2021	4916674069.61314
2022	5659337079.17676
2023	4499186563.1783695