Year	current US$
1995	2318000000
1996	2553000000
1997	2211000000
1998	1857000000
1999	2234000000
2000	2272000000
2001	2340000000
2002	3159000000
2003	4232000000
2004	5098000000
2005	6486000000
2006	6148000000
2007	7190000000
2008	6961000000
2009	5979000000
2010	6523000000
2011	7295000000
2012	7142000000
2013	7434000000
2014	8582000000
2015	9464000000
2016	9773000000
2017	10594000000
2018	10961000000
2019	10547000000
2020	6229000000