Year	current US$
1995	3471000000
1996	3686000000
1997	3600000000
1998	4188000000
1999	4132000000
2000	4064000000
2001	4253000000
2002	4710000000
2003	5304000000
2004	6198000000
2005	6554000000
2006	8375000000
2007	10216000000
2008	9996000000
2009	7807000000
2010	8336000000
2011	10209000000
2012	10104000000
2013	9166000000
2014	9231000000
2015	8374000000
2016	9129000000
2017	10019000000
2018	9973000000
2019	9173000000
2020	4370000000