Year	current US$
1995	620000000
1996	657000000
1997	661000000
1998	709000000
1999	724000000
2000	785000000
2001	719000000
2002	687000000
2003	831000000
2004	834000000
2005	897000000
2006	1061000000
2007	1191000000
2008	1196000000
2009	1073000000
2010	1038000000
2011	971000000
2012	929000000
2013	969000000
2014	887000000
2015	947000000
2016	1038000000
2017	1080000000
2018	1125000000