Year	current US$
1995	71000000
1996	50000000
1997	74000000
1998	64000000
1999	49000000
2000	57000000
2001	58000000
2002	72000000
2003	79000000
2004	112000000
2005	138000000
2006	150000000
2007	229000000
2008	293000000
2009	240000000
2010	222000000
2011	253000000
2012	279000000
2013	324000000
2014	328000000
2015	300000000
2016	344000000
2017	442000000
2018	500000000
2019	527000000
2020	354000000