Year	current US$
1998	257000000
1999	258000000
2000	246000000
2001	279000000
2002	307000000
2003	404000000
2004	507000000
2005	557000000
2006	658000000
2007	804000000
2008	913000000
2009	753000000
2010	662000000
2011	722000000
2012	686000000
2013	752000000
2014	755000000
2015	794000000
2016	875000000
2017	984000000
2018	1147000000
2019	1225000000
2020	438000000