Year	current US$
1993	488000000
1994	812700000
1995	2446200000
1996	2070600000
1997	3167000000
1998	5206900000
1999	8365000000
2000	3155900000
2001	1733700000
2002	998900000
2003	2578500000
2004	3928700000
2005	7890600000
2006	9859300000
2007	23172000000
2008	13766900000
2009	7913100000
2010	6098300000
2011	4092520000
2012	3492990000
2013	3236760000
2014	3039870000
2015	2919000000
2016	3177675707.78064
2017	4227434946.6208997
2018	3901620000
2019	3260540000
2020	3608980000
2021	4388000000
2022	3068120000