Year	current US$
1997	15495960000
1998	9868500000
1999	12091970000
2000	9749910000
2001	9790330000
2002	11441440000
2003	14125030000
2004	18073730000
2005	24139720000
2006	40021560000
2007	69386470000
2008	37876760000
2009	71662540000
2010	103347480000
2011	81878190000
2012	102616700000
2013	80977520000
2014	78839860000
2015	56555700000
2016	81088973557.1815
2017	99217960000
2018	93385360000
2019	98964960000
2020	87092130000
2021	78025830000
2022	71314930000