Year	current US$
1995	408000000
1996	463000000
1997	568000000
1998	375000000
1999	409000000
2000	468000000
2001	777000000
2002	712000000
2003	555000000
2004	644000000
2005	628000000
2006	828000000
2007	999000000
2008	1015000000
2009	688000000
2010	934000000
2011	956000000
2012	948000000
2013	1141000000
2014	1451000000
2015	891000000
2016	867000000
2017	1316000000
2018	1080000000
2019	1309000000
2020	386000000