Year	current US$
1995	71000000
1996	74000000
1997	79000000
1998	82000000
1999	87000000
2000	94000000
2001	101000000
2002	99000000
2003	104000000
2004	108000000
2005	101000000
2006	104000000
2007	99000000
2008	80000000
2009	71000000
2010	71000000
2011	71000000
2012	58000000
2013	59000000
2014	49000000
2015	56000000
2016	53000000