Year	current US$
1995	38000000
1996	37000000
1997	27000000
1998	21000000
1999	15000000
2000	10000000
2001	14000000
2002	33000000
2003	37000000
2004	47000000
2005	61000000
2006	245000000
2007	261000000
2008	193000000
2009	137000000
2010	127000000
2011	143000000
2012	129000000
2013	150000000
2014	392000000
2015	243000000
2016	229000000
2017	239000000
2018	207000000
2019	248000000
2020	76000000