Year	current US$
1998	542000000
1999	583000000
2000	629000000
2001	703000000
2002	702000000
2003	804000000
2004	823000000
2005	863000000
2006	894000000
2007	952000000
2008	1197000000
2009	1295000000
2010	1243000000
2011	1493000000
2012	1644000000
2013	1824000000
2014	2081000000
2015	2208000000
2016	2643000000
2017	2915000000
2018	3210000000
2019	3406000000
2020	1236000000