Year	current US$
1994	3090374243.12788
1995	2223781402.21626
1996	2608323176.1604
1997	3024365292.60406
1998	3058233205.94732
1999	2427818641.34538
2000	14837185773.694
2001	4755327970.80869
2002	5778054343.91871
2003	5155915520.85659
2004	6618156145.03529
2005	7847192468.37827
2006	10052668186.3448
2007	11001828848.6584
2008	12101953115.1584
2009	11750158766.6216
2010	14590281842.3855
2011	16898682609.4331
2012	19253393488.1532
2013	21796564693.5566
2014	22928763745.1762
2015	25492178587.7236
2016	26892886052.5879
2017	27365971120.7501
2018	35879931421.0301
2019	41402372360.3234
2020	38115977928.1362
2021	32501996856.1982