Year	current US$
1995	2383000000
1996	2408000000
1997	2358000000
1998	2371000000
1999	2236000000
2000	2035000000
2001	2066000000
2002	2238000000
2003	2679000000
2004	2977000000
2005	3069000000
2006	3515000000
2007	4287000000
2008	4875000000
2009	4072000000
2010	4496000000
2011	5615000000
2012	5418000000
2013	5774000000
2014	5409000000
2015	4011000000
2016	4017000000
2017	5210000000
2018	5762000000
2019	5944000000
2020	1757000000