Year	current US$
1998	30000000
1999	28000000
2000	57000000
2001	57000000
2002	57000000
2003	57000000
2004	57000000
2005	57000000
2006	63000000
2007	63000000
2008	63000000
2009	63000000
2010	69000000
2011	76000000
2012	75000000
2013	75000000
2014	81000000
2015	7000000
2016	7000000