Year	current US$
1981	262184161122.842
1982	238737394642.623
1983	180339870684.576
1984	152493029275.303
1985	152544375822.681
1986	139939117269.689
1987	140364365393.647
1988	146190614104.66
1989	135918405261.61
1990	146190376902.724
1991	145967462684.16
1992	146101228043.216
1993	133657544450.014
1994	135435822426.218
1995	155210703962.534
1996	175677122937.001
1997	180550080275.04
1998	180252008893.684
1999	179707144134.897
2000	184520124855.6
2001	198601418786.505
2002	218506822435.69
2003	246550455312.622
2004	293393371405.544
2005	354954394388.28
2006	442255191242.418
2007	549066519889.782
2008	636279121293.153
2009	622848397959.078
2010	700705584012.837
2011	803103026333.098
2012	851086974512.562
2013	991426452597.31
2014	1080050779799.2
2015	1065165763523.74
2016	992282745644.301
2017	979817547254.911