Year	current US$
1995	657000000
1996	1120000000
1997	1043000000
1998	928000000
1999	927000000
2000	1030000000
2001	1217000000
2002	967000000
2003	893000000
2004	1227000000
2005	1539000000
2006	1915000000
2007	1993000000
2008	2342000000
2009	2440000000
2010	2797000000
2011	3010000000
2012	3460000000
2013	3611000000
2014	3825000000
2015	4245000000
2016	4522000000
2017	4921000000
2018	5621000000
2019	5682000000
2020	1595000000