Year	current US$
1987	5140186915.887851
1988	5485714285.714286
1989	3444040251.334625
1990	4432011255.381069
1991	6302044992.134242
1992	6807403683.671801
1993	31984701701.701702
1994	33948366600
1995	34445834100
1996	34023284500
1997	35324694300
1998	37352911200
1999	38908460700
2000	39175188600
2001	38037449000
2002	11956773588.444944
2003	14593470488.409191
2004	18301129726.42726
2005	24130382300.76419
2006	28905507926.195427
2007	37348269040.90268
2008	49293062930.46514
2009	52956236298.62853
2010	64237667185.030334
2011	83176277231.4325
2012	90881156804.30508
2013	92774657769.35124
2014	89210530677.45569
2015	107639984288.53952
2016	98429979465.61821
2017	113902234012.83377
2018	82948293880.98775
2019	73625384340.81392
2020	65086024470.632034
2021	76788502390.05397
2022	97175134139.25499
2023	101204054678.79248