Year	current US$
1995	283000000
1996	319000000
1997	445000000
1998	498000000
1999	394000000
2000	408000000
2001	673000000
2002	757000000
2003	669000000
2004	844000000
2005	753000000
2006	821000000
2007	1082000000
2008	1078000000
2009	1132000000
2010	1273000000
2011	1611000000
2012	3272000000
2013	3468000000
2014	3515000000
2015	2867000000
2016	2447000000
2017	2560000000
2018	2687000000
2019	2763000000
2020	826000000