Year	current US$
1995	267000000
1996	313000000
1997	339000000
1998	380000000
1999	391000000
2000	440000000
2001	425000000
2002	429000000
2003	408000000
2004	448000000
2005	511000000
2006	495000000
2007	531000000
2008	532000000
2009	523000000
2010	662000000
2011	689000000
2012	690000000
2013	679000000
2014	717000000
2015	803000000
2016	882000000
2017	940000000
2018	1006000000
2019	1060000000
2020	444000000