Year	% of total merchandise exports
1981	14.505397951838303
1982	20.733809658063354
1983	18.15303905395971
1984	14.151246557722509
1985	9.181871651105599
1986	8.907412250535618
1987	6.355459542846195
1988	17.485792588782143
1989	12.922747807641736
1990	21.25392382872296
1991	17.54836996725104
1992	14.304347531896742
1993	6.218211786221968
1994	8.495846713184813
1995	13.1026413919299
1996	6.448903350600019
1997	5.242533918048834
1998	5.808919825497441
1999	3.6243978039650857
2000	4.872060695393924
2001	4.626004406663831
2002	5.564428106433918
2003	4.89716035096274
2004	3.5380489720414436
2005	5.145975565276418
2006	2.817047813229841
2007	4.202563890448219
2008	4.974435581998716
2009	3.3915571238556352
2010	3.9883144737403766
2011	3.106860228201652
2012	2.6576200349195487
2013	1.7414033097218378
2014	3.8836108635484936
2015	1.9076395690542536
2016	1.993650429868523
2017	6.411526498799244
2018	2.934551751228785
2019	3.1663794799418747
2020	2.7049347535223