Year	current US$
1995	611000000
1996	717000000
1997	759000000
1998	695000000
1999	653000000
2000	713000000
2001	611000000
2002	351000000
2003	345000000
2004	494000000
2005	594000000
2006	598000000
2007	809000000
2008	1051000000
2009	1321000000
2010	1509000000
2011	2203000000
2012	2523000000
2013	2388000000
2014	2229000000
2015	2249000000
2016	2285000000
2017	2823000000
2018	2620000000
2019	2249000000
2020	1055000000