Year	% of total merchandise exports
1976	84.81958067128588
1977	84.62246007191237
1978	82.77728817827017
1979	75.70729631993193
1980	50.821186614658174
1981	79.97033472302113
1982	60.38308060654429
1983	65.22165999546861
1984	75.23072902984723
1985	71.03066287098297
1986	76.9517487258908
1987	84.52716990327298
1988	83.02228980393627
1989	77.11165147425274
1990	79.39134236751521
1991	80.88776661400013
1992	77.43374057303924
1993	74.3149364857731
1994	72.10373505950112
1995	69.63157990559942
1996	65.29791619688375
1997	63.05498659147639
1998	56.08345658331212
1999	62.0411647526897
2000	58.48115483225015
2001	55.123670739726464
2002	58.3389553650279
2003	56.5250570480597
2004	55.65703005300785
2005	60.575097285165334
2006	61.41483462276401
2007	54.566088240907206
2008	70.36408012083774
2009	46.870909218193866
2010	63.290541239699635
2011	54.94677544707224
2012	61.09227344151584
2013	58.56024277339736
2014	64.25459644735024
2015	61.284978169139336
2016	71.76631410829286
2017	75.51499629621898
2018	56.51152183352182
2019	71.64338497750458
2020	58.44980283712067