Year	% of total merchandise exports
1960	0.10193679918450561
1961	0.02074258452603194
1962	0.01643655489809336
1963	0.20521841102316035
1964	0.014191442560136238
1965	0.020107238605898123
1966	0.01883357398455647
1967	0.054629882545752524
1968	0.17577910425898122
1969	0.2768982429999379
1970	0.366145374946404
1971	0.027013978296854885
1972	0.3236245954692557
1973	3.4434747484638546
1974	2.4670533760748996
1975	0.3096999929076338
1976	0.1384160807818721
1977	0.525884599119161
1978	0.3975705238557936
1979	0.38543343334114444
1980	0.3840551085435439
1981	0.7798164635700867
1982	0.2623769779944429
1983	0.8650152507114872
1984	2.211559809556701
1985	1.2577342917205117
1986	0.906465223463891
1987	0.780337323331347
1988	1.5886740618723698
1989	0.9773143117989069
1990	0.7827713870050299
1991	1.3128360455856847
1992	1.0204974527431017
1993	0.8618279981985506
1994	0.7143996510512056
1995	0.7462364795097299
1996	1.3657682101439113
1997	1.5707446032162578
1998	2.664862190861923
1999	3.4386879747267187
2000	2.37160382787002
2001	2.1105551163377836
2002	2.3106479637914235
2003	2.5628119727592673
2004	2.3731652985979794
2005	2.4192602430787793
2006	2.385133319345587
2007	2.2537373720300886
2008	1.7089473315412786
2009	1.6462167138613797
2010	2.3514868387172716
2011	1.784038217921385
2012	2.0580154938434703
2013	2.066037327445391
2014	3.6484721669201226
2015	4.7447870211645515
2016	5.095900140553455
2017	4.860244969804803
2018	3.6446109833836884
2019	4.456848337216301
2020	5.666438407497644