Year	constant 2010 US$
1980	150597585.662077
1981	156772081.865565
1982	150165630.385623
1983	123586321.926659
1984	139652534.039968
1985	130435468.306334
1986	150000780.313151
1987	172950900.457566
1988	190073047.35514
1989	201287353.84595
1990	224462844.24029
1991	216747757.484924
1992	174817425.111014
1993	150784663.067433
1994	240395056.963888
1995	107370813.591874
1996	280721829.760201
1997	466119416.513454
1998	-159339613.205575
1999	-1346201763.92303
2000	590049457.540167
2001	129388339.003913
2002	904302583.356512
2003	778248977.707432
2004	813501391.323069
2005	815562422.098504
2006	976055214.773618
2007	1058615589.61449
2008	1532494791.85402
2009	1644212440.11373
2010	1857769056.89968
2011	2552364471.94935
2012	5446828429.83653
2013	8051924377.38752
2014	9561110866.42983
2015	8728913693.61343
2016	8832000613.09535
2017	6926102173.81179
2018	7496264744.51405