Year	current US$
1995	22000000
1996	18000000
1997	17000000
1998	142000000
1999	172000000
2000	98000000
2001	127000000
2002	68000000
2003	132000000
2004	186000000
2005	240000000
2006	247000000
2007	121000000
2008	62000000
2009	96000000
2010	137000000
2012	97000000
2013	173000000
2014	182000000
2015	99000000
2016	99000000