Year	current US$
1995	60000000
1996	70000000
1997	78000000
1998	64000000
1999	69000000
2000	53000000
2001	53000000
2002	73000000
2003	59000000
2004	55000000
2005	117000000
2006	132000000
2007	150000000
2008	194000000
2009	165000000
2010	177000000
2011	174000000
2012	176000000
2013	216000000
2014	205000000
2015	217000000
2016	207000000
2017	211000000
2018	211000000
2019	211000000
2020	136000000