Year	% of total merchandise exports
1960	7.12743463229522
1961	5.882577916838925
1962	6.845961859862583
1963	4.97730023593563
1964	4.284539362806564
1965	3.667917842657478
1966	3.421017800149268
1967	2.8473196554558804
1968	2.3716373562938453
1969	2.640989630938392
1970	2.482044120841075
1971	3.129937654373849
1972	3.345049857495551
1973	2.405735350733718
1974	1.9895360527988275
1975	1.2642513180306272
1976	1.8884031549179634
1977	2.0415499445483936
1978	2.124536415278453
1979	1.9712673733156088
1980	1.7540640654423802
1981	2.4362997697090547
1982	2.1974465430847876
1983	1.9915804916554831
1984	2.1126294651987734
1985	1.9119724466522707
1986	2.4230632744606604
1987	2.27204678331661
1988	1.8578090347750913
1989	1.7368764033837203
1990	2.3244286712091355
1991	2.8352313312680795
1992	2.417272497270626
1993	2.840203269080064
1994	2.7249583588286828
1995	2.8029761909184545
1996	2.3970786327694174
1997	2.594168485835232
1998	3.2691743639293995
1999	3.58298200131254
2000	3.53303023523197
2001	3.705753455165653
2002	3.669784987630873
2003	3.374674286563632
2004	3.2026261138904055
2005	4.567883088351437
2006	4.836023939682938
2007	3.4314408058103583
2008	3.1725288571699455
2009	4.153149750517499
2010	3.925308306826627
2011	3.9878975861556865
2012	5.563512176861509
2013	4.317655540810315
2014	4.3821508673440634
2015	6.61520974041543
2016	6.077568087829875
2017	6.876462425586929
2018	7.239124178326254
2019	6.302609463799443
2020	4.793765361751095