Year	% of total merchandise exports
1960	1.1817791147400087
1961	1.6547920018386577
1962	1.7007534983853607
1963	1.87877432341758
1964	2.698760029175784
1965	4.218546738524438
1966	6.2672447772960185
1967	4.02039615610904
1968	4.95014245014245
1969	6.236654512006832
1970	7.1637366709209935
1971	11.825919664198683
1972	10.437906141380795
1973	8.898105785265319
1974	12.079341423603719
1975	11.366657350665639
1976	8.200513106013211
1977	6.773039844565357
1978	4.303298932407779
1979	5.1668386239009525
1980	6.259685253052995
1981	7.6359822017696715
1982	5.61080532509381
1983	5.58351407161132
1984	5.852959505136165
1985	5.684752339198576
1986	5.253399016321544
1987	6.42505135105011
1988	6.061144586345475
1989	5.83862423068232
1990	5.606391067650433
1991	9.209927330452103
1992	12.044336513354773
1993	11.766057758382182
1994	12.798037870013419
1995	15.538242854965311
1996	15.66727326468329
1997	15.920432075512291
1998	15.536218846414668
1999	13.507800913184823
2000	14.536093091394116
2001	16.18494129470582
2002	18.89398259939663
2003	19.629208026735846
2004	20.444837728129773
2005	19.997987924114767
2006	17.14097903011291
2007	15.39446641116903
2008	14.880296935065317
2009	14.217101306589285
2010	16.929815296112107
2011	15.10209661500404
2012	13.961854224057928
2013	13.824910186035869
2014	13.420556840682924
2015	17.60553420093345
2016	18.335846622217776
2017	20.554360643251137
2018	21.323089691902993
2019	21.788418048287397
2020	20.92701347353846