Year	current US$
1981	7741092149.6522
1982	7727510025.761126
1983	7401720302.064743
1984	6389098503.309358
1985	5530347257.012851
1986	5497051339.903598
1987	7110796809.556744
1988	8338839042.080525
1989	10451339113.700098
1990	11884167063.614487
1991	12042290327.906778
1992	14629138823.443825
1993	17470673088.72965
1994	20814444387.621124
1995	26565213158.025013
1996	33097093183.196583
1997	39658755050.53196
1998	31488192531.493736
1999	33185853154.583225
2000	34981626687.93736
2001	34524004924.243904
2002	36959602030.99914
2003	39402271856.603355
2004	43034427467.12134
2005	45777705832.23619
2006	50557042719.8686
2007	55577057555.48444
2008	62341268152.308556
2009	53966293099.48505
2010	69239834652.7254
2011	74224237016.12747
2012	79558185309.33691
2013	84169697681.90004
2014	89583209901.69333
2015	97858999139.39438
2016	111847835761.9011
2017	126846380455.64891
2018	145499457397.9476
2019	152458687320.16272
2020	119257490806.48239
2021	148699308216.86942
2022	178086451580.46622
2023	178106234773.2658