Year	current US$
1990	7675478564.38521
1991	6801538730.56859
1992	7280468304.80737
1993	6303902146.48782
1994	6704832707.62762
1995	6348625943.90695
1996	8238373741.7627
1997	7342928500.86573
1998	9043994761.14103
1999	8184016263.38713
2000	7680126108.8738
2001	10253851508.3312
2002	10640416688.8342
2003	13913554250.0845
2004	16005536097.4318
2005	17763191751.7283
2006	19184155885.0437
2007	22257751967.5729
2008	26300861951.2414
2009	22592567392.0645
2010	21291551986.6611
2011	21437077642.7025
2012	18837810766.7049
2013	22666931241.166
2014	23035141379.0935
2015	24189414083.1009
2016	24391269520.5448
2017	26351848516.2058
2018	26746441885.4434
2019	26667240142.8154
2020	24968062741.3443
2021	31041072394.2816