Year	% of total merchandise exports
1960	4.529048446245898
1961	5.308148834444842
1962	5.439675183665998
1963	4.51859819786113
1964	4.241237683811794
1965	4.605119089023715
1966	5.038339098686459
1967	6.890067578600285
1968	5.842681623931624
1969	5.864559254747004
1970	3.252777842834822
1971	2.9808080017813836
1972	3.1123798169691255
1973	3.712479631644016
1974	5.0546522340561415
1975	5.516444060117867
1976	5.842140314953462
1977	5.791394211505216
1978	5.744005758426335
1979	6.402575703438562
1980	7.666965230589828
1981	14.710392087856327
1982	15.293389644402582
1983	12.554940750411708
1984	13.391639358924271
1985	12.431116506504168
1986	11.104313231779074
1987	11.053718645666413
1988	10.828515397746068
1989	8.749166205564443
1990	8.13605135925143
1991	8.210461152640189
1992	4.8641854224706895
1993	4.316557050396861
1994	3.390398238910309
1995	3.3417024272370535
1996	3.318277264468271
1997	3.1960063088114743
1998	3.645555680075168
1999	3.6406031372872496
2000	2.7267191736815537
2001	3.5789924771499684
2002	3.6884969878783784
2003	3.332021007760841
2004	3.7791574877764242
2005	3.7787499230206265
2006	3.430584987470077
2007	3.8077477664078563
2008	4.451535643450694
2009	5.075790713647574
2010	4.596629168381839
2011	4.11434616682445
2012	5.417012680188241
2013	5.308976313917373
2014	5.823141399647882
2015	6.409477190704112
2016	6.678258907992872
2017	6.684922150761069
2018	5.642755968325192
2019	5.752191198474186
2020	5.720746571956394