Year	current US$
1995	24000000
1996	373000000
1997	326000000
1998	305000000
1999	268000000
2000	247000000
2001	223000000
2002	230000000
2003	328000000
2004	377000000
2005	584000000
2006	704000000
2007	927000000
2008	1139000000
2009	798000000
2010	648000000
2011	765000000
2012	680000000
2013	715000000
2014	715000000
2015	618000000
2016	699000000
2017	728000000
2018	778000000
2019	748000000
2020	301000000