Year	current US$
1975	399507459.7764346
1976	605599850.842296
1977	1137445445.357705
1978	964953441.4169585
1979	888498407.1501993
1980	1255421422.88162
1981	1348926126.1554458
1982	1039603463.5553428
1983	1211913748.0956411
1984	1111021651.0204697
1985	1470858658.272732
1986	1535800480.9148154
1987	1455309928.06442
1988	1686328679.0517883
1989	1209112627.273678
1990	1628039273.6526296
1991	1579121627.8318772
1992	1241595299.9949865
1993	2137161130.1827364
1994	2415967333.0737433
1995	2154641463.727527
1996	1985248980.5450587
1997	2134032352.5061178
1998	2291484659.588816
1999	2384016699.045552
2000	1636516195.6628885
2001	1269595991.7299757
2002	1121909172.3655534
2003	1412164586.5114417
2004	1925218551.8329024
2005	2599451334.069667
2006	4147897870.64349
2007	5324841640.510772
2008	5529596890.848847
2009	2804521566.6772914
2010	3231361793.9570017
2011	3061541410.7696753
2012	3665160527.808392
2013	3092371544.069317
2014	4143553395.40475
2015	4771344915.158993
2016	10440751134.239302
2017	10891877666.358747
2018	13340075470.489462
2019	14124735483.170204
2020	14372018745.505163
2021	17839914147.066616
2022	17654086022.16004