Year	current US$
1995	284000000
1996	314000000
1997	351000000
1998	335000000
1999	326000000
2000	392000000
2001	392000000
2002	280000000
2003	287000000
2004	358000000
2005	435000000
2006	481000000
2007	597000000
2008	642000000
2009	589000000
2010	587000000
2011	657000000
2012	835000000
2013	651000000
2014	616000000
2015	572000000
2016	637000000
2017	661000000
2018	747000000
2019	723000000
2020	180000000