Year	current US$
1992	2300000000
1993	5566666666.666667
1994	4973109243.697478
1995	3450402761.795167
1996	3110615384.6153846
1997	3565292758.0893683
1998	3947604595.7077823
1999	3195631768.9530683
2000	3209865852.2980814
2001	2800719424.4604316
2002	3208651419.382217
2003	4233231120.2328315
2004	5858831807.282456
2005	8010697272.752598
2006	10963181258.626478
2007	14205854394.989935
2008	20232727953.56675
2009	18079017561.447163
2010	22221479867.450504
2011	23275700906.39907
2012	21949669541.436264
2013	28086317081.547962
2014	26185189894.46504
2015	16176702358.848648
2016	12140857062.58108
2017	14315271313.256142
2018	15744441521.62732
2019	17412896079.56466
2020	15567055737.167334
2021	15726313923.60188
2022	14347587677.544647
2023	15702163033.900276