Year	current US$
1995	63000000
1996	68000000
1997	72000000
1998	71000000
1999	69000000
2000	58000000
2001	62000000
2002	57000000
2003	75000000
2004	103000000
2005	121000000
2006	132000000
2007	125000000
2008	110000000
2009	83000000
2010	90000000
2011	94000000
2012	95000000
2013	101000000
2014	343000000
2015	317000000
2016	332000000
2017	352000000
2018	366000000
2019	370000000
2020	117000000