Year	current US$
1995	18909000000
1996	20424000000
1997	20872000000
1998	20094000000
1999	20043000000
2000	21445000000
2001	19046000000
2002	17790000000
2003	17833000000
2004	21562000000
2005	23259000000
2006	24881000000
2007	27881000000
2008	32065000000
2009	26357000000
2010	31506000000
2011	36738000000
2012	41192000000
2013	42124000000
2014	42482000000
2015	37972000000
2016	35683000000
2017	37290000000
2018	41262000000
2019	40082000000
2020	11393000000