Year	% of total merchandise exports
1960	1.8553453522931536
1961	1.8407212041500458
1962	1.3219978738698048
1963	1.3672744188692936
1964	1.584689066463309
1965	1.5938016194046445
1966	1.823477694210149
1967	2.309031214915297
1968	2.2875582473419946
1969	2.176667062214235
1970	2.1960674119622663
1971	2.254027497605
1972	2.1305810389870605
1973	2.377671672459662
1974	3.0534568277551384
1975	4.246205731645884
1976	2.905134604900773
1977	3.100047078893252
1978	3.0242384509450373
1979	2.8382485472267196
1980	3.5700162477261452
1981	5.177808956078903
1982	5.485469332634007
1983	5.366038221408612
1984	4.685617122492696
1985	4.190077806339717
1986	4.1012506789802625
1987	3.7069128581701536
1988	3.342940811612437
1989	2.9302684616684846
1990	2.8037682465876315
1991	2.4009988225485017
1992	2.435754905371096
1993	2.2832322705412023
1994	1.54888238196318
1995	1.5669044481190348
1996	1.4442720854221935
1997	1.4690728855590358
1998	1.6055136346203667
1999	1.5835481454155154
2000	1.427165441933601
2001	1.7273429257728599
2002	1.8760978152980932
2003	1.874325134174421
2004	2.0167952355220353
2005	1.9319971379193082
2006	2.0116007793848376
2007	2.235900707144638
2008	2.35153274750484
2009	2.705194414390481
2010	2.747546565706331
2011	2.217809697436629
2012	2.289230713241436
2013	2.2381770008404507
2014	2.5087423002383327
2015	2.5182915737645226
2016	2.6544695556185456
2017	2.543019142806393
2018	2.286639287564426
2019	2.0685565134481307
2020	1.9547719107882566