Year	current US$
1995	3708000000
1996	3736000000
1999	6797000000
2000	5849000000
2001	5638000000
2002	6077000000
2003	7155000000
2004	8162000000
2005	8189000000
2006	8088000000
2007	9690000000
2008	10772000000
2009	9290000000
2010	9719000000
2011	10979000000
2012	10648000000
2013	9603000000
2014	8980000000
2015	8115000000
2016	8219000000
2017	8485000000
2018	7156000000
2019	7352000000
2020	3312000000