Year	current US$
1995	14000000
1996	18000000
1997	33000000
1998	41000000
1999	47000000
2000	52000000
2001	81000000
2002	81000000
2003	90000000
2004	189000000
2005	243000000
2006	406000000
2007	522000000
2008	564000000
2009	570000000
2010	694000000
2011	762000000
2012	853000000
2013	905000000
2014	994000000
2015	956000000
2016	1037000000
2017	1224000000
2018	1358000000
2019	1553000000
2020	303000000