Year	current US$
1995	1278000000
1996	1317000000
1997	1347000000
1998	1153000000
1999	1078000000
2000	1072000000
2001	1132000000
2002	1266000000
2003	1321000000
2004	1257000000
2005	1629000000
2006	1784000000
2007	2446000000
2008	2915000000
2009	2538000000
2010	2240000000
2011	2203000000
2012	2618000000
2013	3014000000
2014	3140000000
2015	3442000000
2016	4110000000
2017	2160000000
2018	2667000000
2019	3518000000
2020	2509000000