Year	current US$
1995	1162000000
1996	1431000000
1997	1560000000
1998	1455000000
1999	1339000000
2000	1452000000
2001	1556000000
2002	1355000000
2003	1349000000
2004	1543000000
2005	1934000000
2006	2171000000
2007	2501000000
2008	2819000000
2009	2841000000
2010	3228000000
2011	3689000000
2012	4461000000
2013	4592000000
2014	5299000000
2015	4890000000
2016	4891000000
2017	5136000000
2018	5531000000
2019	5658000000
2020	1576000000