Year	current US$
1995	446000000
1996	795000000
1997	353000000
1998	357000000
1999	184000000
2000	250000000
2001	252000000
2002	255000000
2003	925000000
2004	1268000000
2005	1280000000
2006	1545000000
2007	1593000000
2008	1518000000
2009	685000000
2010	925000000
2011	1130000000
2012	1414000000
2013	1083000000
2014	1365000000
2015	1658000000
2016	1909000000
2017	2197000000
2018	1885000000
2019	1652000000
2020	848000000