Year	current US$
1995	1094000000
1996	1150000000
1997	1257000000
1998	1453000000
1999	1511000000
2000	1483000000
2001	1563000000
2002	1531000000
2003	1821000000
2004	2101000000
2005	2228000000
2015	2130000000
2016	1721000000
2017	2091000000
2018	2180000000
2019	2941000000
2020	1481000000