Year	current US$
1995	799000000
1996	762000000
1997	610000000
1998	818000000
1999	790000000
2000	769000000
2001	829000000
2002	842000000
2003	1138000000
2004	1575000000
2005	1761000000
2015	2008000000
2016	1862000000
2017	2110000000
2018	2316000000
2019	2333000000
2020	648000000