Year	current US$
1995	21000000
1996	59000000
1997	62000000
1998	63000000
1999	75000000
2000	69000000
2001	55000000
2002	38000000
2003	26000000
2004	30000000
2005	40000000
2006	49000000
2007	58000000
2008	52000000
2009	52000000
2010	73000000
2011	79000000
2012	82000000
2013	81000000
2014	77000000
2015	93000000
2016	103000000
2017	94000000
2018	80000000
2019	47000000
2020	47000000