Year	current US$
1992	6100000000
1993	12266666666.666666
1994	11947058823.529411
1995	11125776754.890678
1996	11887538461.538462
1997	10934514637.904469
1998	11828723173.639713
1999	9485663858.804653
2000	9729515283.355644
2001	9782194244.604315
2002	11751892881.87077
2003	13994695968.838818
2004	17201031357.336617
2005	21984845530.267155
2006	26125732084.903194
2007	31844339446.80534
2008	41604381202.022095
2009	36786129858.04049
2010	41016078509.053185
2011	38387719287.66562
2012	40474540896.4963
2013	48855884820.46835
2014	52475034477.36231
2015	38275799495.03924
2016	33484237493.359097
2017	38367431852.12556
2018	41597304290.128426
2019	45606547141.84024
2020	42469282559.462204
2021	47160428176.11549
2022	52129355317.7716
2023	52311869253.66186