Year	current US$
1995	7000000
1996	8000000
1997	10000000
1998	5000000
1999	4000000
2000	8000000
2001	8000000
2002	6000000
2003	11000000
2004	26000000
2005	72000000
2006	134000000
2007	326000000
2008	415000000
2009	198000000
2010	107000000
2011	83000000
2012	70000000
2013	49000000
2014	42000000
2015	50000000
2016	61000000
2017	87000000
2018	125000000
2019	150000000
2020	49000000