Year	current US$
1995	2928000000
1996	3562000000
1997	3797000000
1998	3646000000
1999	3565000000
2000	3733000000
2001	4154000000
2002	3728000000
2003	4061000000
2004	3914000000
2005	4120000000
2006	4254000000
2007	4739000000
2008	6443000000
2009	5976000000
2010	5587000000
2011	5929000000
2012	5057000000
2013	5362000000
2014	5864000000
2015	5320000000
2016	5674000000
2017	6233000000
2018	6887000000
2019	7283000000
2020	3229000000