Year	current US$
1995	117000000
1996	115000000
1997	133000000
1998	135000000
1999	221000000
2000	226000000
2001	247000000
2002	301000000
2003	434000000
2004	572000000
2005	549000000
2006	621000000
2007	262000000
2008	291000000
2009	200000000
2010	149000000
2011	159000000
2012	173000000
2013	229000000
2014	257000000
2015	230000000
2016	275000000
2017	352000000
2018	379000000
2019	371000000
2020	215000000