Year	current US$
1990	3852597510.822355
1991	5595508534.442545
1992	7705899073.441578
1993	10083305861.510546
1994	11315269026.843641
1995	13484512576.168743
1996	14732244677.357769
1997	16351412796.362455
1998	17038094308.41114
1999	17365854823.177994
2000	17493200663.34992
2001	17920398009.95025
2002	19170812603.648426
2003	20375456053.067993
2004	20693332914.096188
2005	20755585497.844112
2006	21877798425.2073
2007	24679032507.46269
2008	29566777584.0796
2009	34367833516.41791
2010	38487405822.22222
2011	40952183929.684906
2012	46719333414.92538
2013	49349929584.74295
2014	51624263759.20398
2015	51595443854.06302
2016	51724626167.82753
2017	54519682177.114426
2018	57240961599.33665
2019	56386179820.46332
2020	34657060737.527115
2021	28086313143.343258
2022	30230252480.867115
2023	24308515321.340355