Year	current US$
1995	498000000
1996	513000000
1997	545000000
1998	583000000
1999	631000000
2000	669000000
2001	670000000
2002	760000000
2003	700000000
2004	650000000
2005	550000000
2006	540000000
2007	645000000
2008	800000000
2009	882000000
2010	1510000000
2011	774000000