Year	current US$
1995	191000000
1996	230000000
1997	270000000
1998	315000000
1999	327000000
2000	394000000
2001	573000000
2002	788000000
2003	935000000
2004	2560000000
2005	3125000000
2006	3485000000
2007	4597000000
2008	5768000000
2009	3576000000
2010	3788000000
2011	4294000000
2012	4842000000
2013	5083000000
2014	1612000000
2015	1082000000
2016	1078000000
2017	1261000000
2018	1445000000
2019	1620000000
2020	374000000