Year	current US$
1995	108000000
1996	114000000
1997	117000000
1998	110000000
1999	112000000
2000	111000000
2001	94000000
2002	156000000
2003	196000000
2004	241000000
2005	149000000
2006	122000000
2007	142000000
2008	152000000
2009	141000000
2010	129000000
2011	166000000
2012	165000000
2013	168000000
2014	187000000
2015	158000000
2016	159000000