Year	current US$
1995	763000000
1996	797000000
1997	860000000
1998	1038000000
1999	1256000000
2000	1629000000
2001	1480000000
2002	1429000000
2003	1573000000
2004	1755000000
2005	2008000000
2006	2066000000
2007	2454000000
2008	2811000000
2009	2216000000
2010	2426000000
2011	2646000000
2012	2773000000
2013	3171000000
2014	3137000000
2015	3408000000
2016	3776000000
2017	3758000000
2018	4073000000
2019	4282000000
2020	1479000000