Year	current US$
1995	938000000
1996	1318000000
1997	1840000000
1998	1589000000
1999	640000000
2000	610000000
2001	858000000
2002	910000000
2003	2076000000
2005	501000000
2006	3536000000
2007	6665000000
2008	11007000000
2009	6236000000
2010	8348000000
2011	9533000000
2012	9240000000
2013	9152000000
2014	9204000000
2015	9017000000
2016	4524000000
2017	8194000000
2018	13218000000
2019	16406000000
2020	6613000000