Year	current US$
1995	8000000
1996	8000000
1997	9000000
1998	9000000
1999	10000000
2000	10000000
2001	9000000
2002	8000000
2003	9000000
2004	9000000
2005	8000000
2006	7000000
2007	7000000
2008	7000000
2009	3000000
2010	3000000
2011	13000000
2012	18000000
2013	19000000
2014	23000000
2015	27000000
2016	33000000