Year	constant 2010 US$
1981	93720593411.9952
1982	77085779288.1974
1983	60124969445.7483
1984	46607410664.0497
1985	51208957138.6391
1986	50559812874.9199
1987	42746591192.1175
1988	38555395754.566
1989	43006106876.0188
1990	50297278406.9581
1991	50734566853.5016
1992	49958494455.8018
1993	54143336610.3909
1994	52435313620.651
1995	47178462882.2759
1996	51727977217.8081
1997	52610687967.7055
1998	53323792240.6182
1999	50436911027.9065
2000	55593888512.0726
2001	53412945063.8266
2002	56465767294.8934
2003	67696714839.1568
2004	60715579567.109
2005	62474394836.0449
2006	81167921213.4394
2007	96692138506.6394
2008	101423416415.548
2009	116939478483.671
2010	128338229296.948
2011	126596497585.14
2012	131734193071.803
2013	139426570704.105
2014	157586644788.531
2015	162781310722.262
2016	159903799899.344
2017	167840980214.796