Year	current US$
1995	17000000
1996	8000000
1997	3000000
1998	15000000
1999	8000000
2000	9000000
2001	17000000
2002	15000000
2003	40000000
2004	73000000
2007	66000000
2008	133000000
2009	171000000
2010	101000000
2011	104000000
2012	135000000
2013	156000000
2014	178000000
2015	233000000
2016	206000000
