Year	current US$
1995	878000000
1996	1117000000
1997	1209000000
1998	1120000000
1999	1013000000
2000	1060000000
2001	1164000000
2002	1075000000
2003	1062000000
2004	1185000000
2005	1499000000
2006	1690000000
2007	1904000000
2008	2177000000
2009	2252000000
2010	2641000000
2011	3032000000
2012	3626000000
2013	3941000000
2014	4683000000
2015	4318000000
2016	4254000000
2017	4475000000
2018	4784000000
2019	4935000000
2020	1396000000