Year	current US$
1989	25947368421.05263
1990	22857142857.142857
1991	18384615384.615383
1992	16251101321.585903
1993	17193836890.108917
1994	20260571957.410957
1995	24182357363.133785
1996	21479456607.354374
1997	21891238831.19241
1998	18496110211.623234
1999	15237000519.556986
2000	17948312140.307224
2001	19370637180.990677
2002	20165301668.504917
2003	26029649587.600098
2004	34473773265.651436
2005	41868945655.46783
2006	51424950495.04951
2007	69542970297.02971
2008	95770805895.55669
2009	54148248545.80272
2010	69578265846.01442
2011	93809110765.73853
2012	100863605926.09537
2013	97353058926.56073
2014	69553942785.77353
2015	50257229465.93265
2016	52487083453.25532
2017	62669875998.46386
2018	70634825281.8368
2019	75832862621.16139
2020	63171454470.37347
2021	83920880266.57002
2022	84155821685.17258
2023	88506342832.2722