Year	current US$
1995	146000000
1996	142000000
1997	65000000
1998	66000000
1999	62000000
2000	46000000
2001	62000000
2002	50000000
2003	47000000
2004	52000000
2005	72000000
2006	75000000
2007	77000000
2008	67000000
2009	65000000
2010	54000000
2011	66000000
2012	60000000
2013	68000000
2014	64000000
2015	79000000
2016	73000000