Year	% of total merchandise exports
1960	6.798373038930854
1961	15.180360721442888
1962	10.5496222974733
1963	15.342960288808664
1964	17.201484392054137
1965	10.266856793644328
1966	17.40644038294169
1967	18.14055636896047
1968	13.659281894576011
1969	12.345381298229686
1970	12.585747890637105
1971	12.116158503426023
1972	15.759695027501323
1973	15.874031876080139
1974	11.703509454836
1975	10.14853508971156
1976	13.25423933945645
1977	15.598664973948608
1978	10.063218249981624
1979	10.904456674627824
1980	11.883340796100281
1981	10.017476645622585
1982	13.363457131277933
1983	9.811436985631872
1984	8.74792188444598
1985	10.749910449019154
1986	9.13549651056761
1987	8.417383751761534
1988	7.419822450076932
1989	7.503475473309564
1990	5.7389047718006125
1991	5.193066914876242
1992	6.047943120653579
1993	6.407917680596051
1994	8.934971759254397
1995	9.638261507236802
1996	11.75527397979572
1997	13.000211718001431
1998	11.964529289693445
1999	13.158077848687974
2000	14.994549518570178
2001	15.790809228904434
2002	17.05157169929217
2003	20.655038029564704
2004	22.35793575491408
2005	23.54931997058877
2006	23.627033927436216
2007	24.861636936486065
2008	26.062000924420392
2009	26.99121273592669
2010	29.449079691354513
2011	31.03406279403484
2012	31.80657352334455
2013	33.12433235473652
2014	32.69917369055831
2015	32.86322962621924
2016	32.773450461728466
2017	34.278798164247114
2018	35.52607135275551
2019	33.85122110323186
2020	32.80999127307464