Year	current US$
1992	111000000
1993	350000000
1994	490000000
1995	750000000
1996	770000000
1997	745000000
1998	595000000
1999	690000000
2000	785000000
2001	650000000
2002	738000000
2003	797000000
2004	915000000
2005	909000000
2006	1399000000
2007	1468000000
2008	1409000000
2009	1010000000
2010	1195000000
2011	1257000000
2012	1360000000
2013	1162000000
2014	977000000
2015	891000000
2016	899000000
2017	1198000000
2018	1073000000
2019	1174000000
2020	1407000000
2021	2150000000
2022	2142000000
2023	1718000000