Year	current US$
1995	94000000
1996	115000000
1997	118000000
1998	126000000
1999	127000000
2000	131000000
2001	134000000
2002	134000000
2003	136000000
2004	138000000
2005	159000000
2006	162000000
2007	205000000
2008	205000000
2009	164000000
2010	267000000
2011	293000000
2012	291000000
2013	297000000
2014	310000000
2015	340000000
2016	379000000
2017	410000000
2018	457000000
2019	436000000
2020	230000000