Year	current US$
1995	995000000
1996	1026000000
1997	623000000
1998	769000000
1999	643000000
2000	469000000
2001	677000000
2002	484000000
2003	378000000
2004	554000000
2005	722000000
2006	843000000
2007	972000000
2008	1097000000
2009	1053000000
2010	885000000
2011	806000000
2012	904000000
2013	926000000
2014	900000000
2015	654000000
2016	546000000