Year	current US$
1995	428000000
1996	670000000
1997	816000000
1998	845000000
1999	890000000
2000	837000000
2001	733000000
2002	787000000
2003	963000000
2004	1142000000
2005	1308000000
2006	1570000000
2007	1723000000
2008	1991000000
2009	2014000000
2010	2008000000
2011	2262000000
2012	2443000000
2013	3000000000
2014	3077000000
2015	3309000000
2016	3486000000
2017	3576000000
2018	3557000000
2019	3738000000
2020	776000000