Year	current US$
1998	338000000
1999	350000000
2000	377000000
2001	538000000
2002	539000000
2003	546000000
2004	601000000
2005	627000000
2006	749000000
2007	905000000
2008	1105000000
2009	1092000000
2010	1072000000
2011	1515000000
2012	1723000000
2013	1888000000
2014	1971000000
2015	2247000000
2016	2324000000
2017	2629000000
2018	2874000000
2019	3077000000
2020	669000000