Year	current US$
1980	16796964228.8111
1981	16925850521.8549
1982	16481791878.9852
1983	14190572908.9928
1984	15104232477.6694
1985	14678972234.701
1986	17317865361.9153
1987	23927117102.0218
1988	18793863166.6367
1989	18031888629.5334
1990	15966907949.3221
1991	8248425249.76239
1992	8792193210.16238
1993	9149431780.16276
1994	8454849861.23286
1995	17336976578.1594
1996	11051385197.6298
1997	10232739166.1864
1998	13216769917.2439
1999	11821843620.4995
2000	11217769791.9479
2001	12384095975.8441
2002	14557568295.9104
2003	18436756473.7645
2004	22724772662.0129
2005	25571719447.0427
2006	28389375094.9708
2007	34810581583.1472
2008	44743626135.633
2009	42878523716.4381
2010	41565271359.47
2011	47089280810.0722
2012	45615948090.9602
2013	46656644413.6685
2014	47989312804.0166
2015	41775029209.2939
2016	44463745215.0075
2017	49326111759.8884
2018	54463867712.6701
2019	56961503392.9708
2020	57630359608.5349
2021	69565093347.5882