Year	current US$
1995	1356000000
1996	1409000000
1997	1427000000
1998	1365000000
1999	1598000000
2000	1753000000
2001	1665000000
2002	1773000000
2003	1770000000
2004	1897000000
2005	2081000000
2006	2066000000
2007	2198000000
2008	2155000000
2009	2025000000
2010	2159000000
2011	2157000000
2012	2333000000
2013	2305000000
2014	2336000000
2015	2554000000
2016	3091000000
2017	2951000000
2018	3756000000
2019	4150000000
2020	1007000000