Year	current US$
1995	710000000
1996	715000000
1997	1000000000
1998	1221000000
1999	673000000
2000	742000000
2001	837000000
2003	6782000000
2004	5931000000
2005	5969000000
2006	5457000000
2007	5796000000
2008	6317000000
2009	7157000000
2010	8026000000
2011	6797000000
2012	7361000000
2013	7032000000
2014	6835000000
2015	7087000000
2016	7373000000
2017	8086000000
2018	8694000000
2019	8717000000
2020	2369000000