Year	current US$
1995	719000000
1996	630000000
1997	635000000
1998	642000000
1999	536000000
2000	387000000
2001	420000000
2002	504000000
2003	503000000
2004	585000000
2005	653000000
2006	956000000
2007	1024000000
2008	1140000000
2009	1202000000
2010	1736000000
2011	1280000000
2012	1257000000
2013	1206000000
2014	1251000000
2015	1267000000
2016	1367000000
2017	1496000000
2018	1493000000
2019	1569000000
2020	408000000