Year	current US$
1995	575000000
1996	475000000
1997	461000000
1998	503000000
1999	490000000
2000	441000000
2001	590000000
2002	432000000
2003	521000000
2004	562000000
2005	564000000
2006	675000000
2007	829000000
2008	1033000000
2009	832000000
2010	963000000
2011	1131000000
2012	954000000
2013	1090000000
2014	1021000000
2015	990000000
2016	1008000000
2017	1130000000
2018	1151000000
2019	1163000000
2020	294000000