Year	current US$
1995	1259000000
1996	1466000000
1997	1461000000
1998	1383000000
1999	1430000000
2000	1235000000
2001	1255000000
2002	1386000000
2003	1649000000
2004	2229000000
2005	2671000000
2006	2535000000
2007	3077000000
2008	3006000000
2009	2580000000
2010	3039000000
2011	3461000000
2012	3715000000
2013	3861000000
2014	4108000000
2015	3721000000
2016	4010000000
2017	4463000000
2018	4603000000
2019	4408000000
2020	1466000000