Year	current US$
1995	743000000
1996	772000000
1997	719000000
1998	741000000
1999	715000000
2000	629000000
2001	628000000
2002	659000000
2003	808000000
2004	909000000
2005	889000000
2006	1135000000
2007	1450000000
2008	1641000000
2009	1327000000
2010	1470000000
2011	1768000000
2012	1541000000
2013	1733000000
2014	1752000000
2015	1437000000
2016	1368000000
2017	1810000000
2018	2097000000
2019	2219000000
2020	512000000