Year	current US$
1990	374815716.463145
1991	447473439.399489
1992	514965400.068172
1993	615486998.232282
1994	578873524.082263
1995	899764693.879459
1996	951262286.561627
1997	949144715.425684
1998	928075674.873726
1999	927870592.615826
2000	1061848226.68799
2001	987023373.796401
2002	1388303817.42342
2003	1492215509.09379
2004	1859608651.92034
2005	2312118914.01117
2006	2480382892.90038
2007	2991875607.1871
2008	4378109597.82831
2009	4648703179.9836
2010	5630334966.87194
2011	5803608724.23133
2012	6891538843.33387
2013	7535835949.00489
2014	8338762677.37287
2015	8675282884.34831
2016	7217042407.26947
2017	10708201129.0611
2018	12330761600.9053
2019	12472765738.767
2020	8936571775.21773
2021	9531545207.45547