Year	% of total merchandise exports
1960	11.381743683132257
1961	11.302847282139776
1962	8.624420401854714
1963	8.898225957049487
1964	7.8059399782304455
1965	8.782046828319322
1966	8.539008910827617
1967	9.482659292545224
1968	9.470205514819789
1969	8.72298892318867
1970	7.167681555911362
1971	7.36490446606494
1972	8.776745989819194
1973	12.161853560048405
1974	10.719841381157
1975	10.648984276686074
1976	10.528868439034186
1977	11.917681678579124
1978	9.21310075336326
1979	8.287287101611106
1980	7.200775019626036
1981	5.778512846720377
1982	6.06564986132399
1983	4.186184933316645
1984	3.8465112791641984
1985	5.1136111187381585
1986	5.683245191187735
1987	3.398223107345752
1988	4.003373554191061
1989	3.2497719059278207
1990	3.0500292791582626
1991	4.007031249715463
1992	4.063234689508533
1993	3.6917297675912466
1994	3.7791902237310193
1995	3.58480814659762
1996	3.7223966897166734
1997	4.2343746663678035
1998	4.0440468797103435
1999	4.027850440381568
2000	2.805912079017125
2001	3.9027424588904744
2002	4.580386659688411
2003	4.4878864454360246
2004	4.306800334069437
2005	4.176263033001773
2006	10.875641481991057
2007	4.885313161310192
2008	4.64423720919401
2009	6.589035535802977
2010	6.382032284627572
2011	6.02481771622844
2012	5.997125299641052
2013	6.609426502234513
2014	7.612271790144387
2015	8.463616774262237
2016	9.134139569508362
2017	7.6044037492145495
2018	7.252646754661947
2019	10.01151898042343
2020	15.047323254380876