Year	% of total merchandise exports
1960	5.17891031106466
1961	5.425781436982432
1962	4.811262044249877
1963	4.713798031120991
1964	4.116800677105375
1965	2.9185245237130117
1966	2.899182697099571
1967	3.0387407807987485
1968	3.3101491537446064
1969	3.459502765727143
1970	3.352765253298113
1971	2.9964388221537153
1972	2.681293539318264
1973	2.5036261587942232
1974	2.980497734585331
1975	3.3820783175797975
1976	2.3770960749711927
1977	2.096737868022098
1978	2.36583319947886
1979	2.4287448113808794
1980	2.541465507578012
1981	2.9335534395585117
1982	2.1814848263189366
1983	1.6155533476632271
1984	1.6299443397012066
1985	1.3445180212524266
1986	1.4193879701371002
1987	1.307362733795619
1988	1.3382399310873967
1989	1.4120906132609177
1990	1.372117758412333
1991	1.6465997577910774
1992	1.9034061400515487
1993	2.1726429364982107
1994	2.7308196319333735
1995	2.69923558193091
1996	2.7671143574622437
1997	3.244405029436975
1998	3.1822851486642794
1999	2.686148620481364
2000	2.5335394945478193
2001	2.5252823975435006
2002	2.090760818361862
2003	1.9114507279675599
2004	1.8532787110314124
2005	2.0180584505096197
2006	2.1415909705361402
2007	2.3209806273763496
2008	2.395339377381182
2009	2.2001458601465984
2010	2.6800105913022074
2011	2.990347975942102
2012	3.0972259019112904
2013	3.039359125826076
2014	2.78852722816475
2015	2.7163999382917314
2016	2.5502460498075745
2017	2.7201563647722393
2018	2.561628828663248
2019	2.3969460370417894
2020	2.2467497637668306