Year	current US$
2000	19000000
2001	20000000
2002	25000000
2003	24000000
2004	40000000
2005	45000000
2006	53000000
2007	56000000
2008	62000000
2009	66000000
2010	72000000
2011	75000000
2012	84000000
2013	153000000
2014	135000000
2015	109000000
2016	122000000
2017	117000000
2018	121000000
2019	116000000