Year	current US$
1995	39000000
1996	47000000
1997	35000000
1998	29000000
1999	32000000
2000	75000000
2001	109000000
2002	62000000
2003	84000000
2004	54000000
2005	54000000
2006	50000000
2007	28000000
2008	11000000
2009	1000000
2010	12000000
2011	14000000
2012	28000000
2013	31000000
2014	34000000
2015	26000000
2016	3000000
2017	19000000
2018	52000000
2019	28000000