Year	% of merchandise exports
1976	47.34787727280212
1977	52.491730961833184
1978	54.943061087182045
1979	55.50307795152833
1980	66.69402915785747
1981	70.56682963717083
1982	60.955271735512085
1983	64.34758931284232
1984	60.48331644512187
1985	77.44839957913797
1986	81.07661626819797
1987	83.3435774145454
1988	78.61476058967176
1989	77.9825641196729
1990	96.07084575385075
1991	95.31595971940673
1992	94.68984719728824
1993	92.53379720844418
1994	93.6525097489273
1995	95.07035044384676
1996	91.05725572913836
1997	91.80861344790027
1998	93.87885925162139
1999	94.62299907777137
2000	95.51452791671733
2001	88.9611922679817
2002	91.46478157442941
2003	93.28089423129511
2004	90.71754408967122
2005	87.41074719980277
2006	84.17894656527255
2007	73.7614246362816
2008	77.6163973455862
2009	85.17390083378193
2010	87.72014382597236
2011	90.33947223167178
2012	90.69779953442824
2013	82.31734183221212
2014	91.91082314073614
2015	92.77575568971312
2016	88.63373595731926
2017	89.97994166829365
2018	92.3440146133606