Year	current US$
1995	186000000
1996	201000000
1997	188000000
1998	176000000
1999	175000000
2000	190000000
2001	197000000
2002	217000000
2003	263000000
2004	300000000
2005	318000000
2006	297000000
2007	359000000
2008	369000000
2009	270000000
2010	300000000
2011	324000000
2012	298000000
2013	271000000
2014	272000000
2015	247000000
2016	253000000
2017	257000000
2018	270000000
2019	245000000
2020	52000000