Year	current US$
1989	43473684210.52631
1990	45428571428.571434
1991	41512820512.82051
1992	33992657856.093983
1993	31535464447.00257
1994	25472402683.860603
1995	26580465207.59763
1996	25898771829.421543
1997	27189204408.11363
1998	23809757619.9959
1999	18064651918.608223
2000	18596629960.518234
2001	22764654418.197727
2002	25441625794.945206
2003	29813107385.993706
2004	36703139687.91126
2005	52788742585.217674
2006	67749702970.297035
2007	90209702970.29703
2008	119047596446.01964
2009	79142216129.91
2010	91471902892.76012
2011	114905147282.80153
2012	126540649520.85645
2013	138841611409.98373
2014	95379954956.22446
2015	61676934146.67486
2016	62172918251.54804
2017	75254150849.17226
2018	90798173797.73866
2019	114453534024.7034
2020	114778493751.87425
2021	138061493307.10858
2022	104574992837.55376
2023	114603515894.28162