Year	constant 2010 US$
1970	56885267368.412
1971	61682923206.3324
1972	65093165822.1936
1973	71719331108.1907
1974	78438792560.9514
1975	81498638478.8581
1976	88054921337.194
1977	97269112942.1546
1978	106391117567.941
1979	110598415567.181
1980	138862375890.833
1981	161493819872.822
1982	172455945336.258
1983	562799417093.18
1984	801314756117.676
1985	1142636092939.41
1986	1096768773908.37
1987	923760042645.312
1988	352271228988.937
1989	406478051572.603
1990	662970535897.83
1991	524360469329.417
1992	601643274787.595
1993	851207420266.961
1994	1103076519111.45
1995	1163094017606.62
1996	688581749245.956
1997	609694901584.026
1998	40064247431.2995
1999	-117328407978.902
2000	-318760825722.301
2001	-418146350897.904
2002	122829221819.168
2003	-431309939896.317
2004	-50455237722.304
2005	-168714610780.021
2006	-81185471638.4748
2007	447727966758.997
2008	441906127220.728
2009	549549865754.552
2010	562416859661.06
2011	593097161173.474
2012	622222083861.762
2013	656934900722.449
2014	688641014913.788
2015	727090532585.408
2016	786064660673.065
2017	809950854309.128