Year	% of total merchandise exports
1981	37.519362378134836
1982	41.648337871424786
1983	39.521453376718966
1984	40.317610576383366
1985	38.134691576795106
1986	41.34728459477458
1987	31.95012348494633
1988	28.324697471872852
1989	23.83579477390178
1990	23.806872673935736
1991	19.495963073307273
1992	21.41257118637049
1993	35.04626817514402
1994	27.063104123203352
1995	13.902961438923905
1996	11.025589714806362
1997	16.799720451579873
1998	7.862769609864031
1999	7.475573514473184
2000	4.991205939226037
2001	17.011021280680374
2002	31.031139754900522
2003	45.7154346423306
2004	50.71032789144303
2005	47.45965389103542
2006	33.60826325138671
2007	22.184547890112682
2008	37.00743935623519
2009	54.07169553429861
2010	53.11933944608603
2011	63.399623116813764
2012	76.69031999590055
2013	80.47540169927741
2014	82.31370657009778
2015	75.48769933690426
2016	84.04199768956923
2017	83.28829185871315
2018	28.661687704255144
2019	41.92689903655381
2020	30.446318765788767