Year	current US$
1995	74000000
1996	69000000
1997	65000000
1998	67000000
1999	65000000
2000	66000000
2001	65000000
2002	62000000
2003	94000000
2004	125000000
2005	133000000
2006	196000000
2007	201000000
2008	228000000
2009	191000000
2010	167000000
2011	171000000
2012	164000000
2013	189000000
2014	231000000
2015	207000000
2016	213000000
2017	220000000
2018	255000000