Year	% of total merchandise exports
1960	0.2413513184635693
1961	0.2176451574824702
1962	0.32143123876763263
1963	0.28066284422440857
1964	0.30897781927560064
1965	0.3347233035446053
1966	0.40584707265747993
1967	0.34794958806557863
1968	0.3230889714836813
1969	0.3677989890643043
1970	0.4008733953163387
1971	0.42470668061822286
1972	0.6657415506484959
1973	0.5195474308080126
1974	0.48228550835489803
1975	0.307123814844308
1976	0.38129705354272875
1977	0.3290119658754883
1978	0.399363266308518
1979	0.3285017760930617
1980	0.4004560839434964
1981	0.742304739318443
1982	0.9434720378098757
1983	1.1213336043974393
1984	1.3380388813141346
1985	1.4471403353877124
1986	0.8630997474152444
1987	1.1428268370998669
1988	1.0517437770704008
1989	0.8705158071799803
1990	1.1743406333554451
1991	1.081389437134152
1992	1.65881555920994
1993	2.0840556832514543
1994	2.5053098507390694
1995	2.9302496194694534
1996	2.5852348371604794
1997	2.6283494577042172
1998	2.170342404163879
1999	1.848713236564056
2000	2.0522850104573833
2001	2.068684278518357
2002	2.1731226326136737
2003	2.4191786981828933
2004	2.426808954337497
2005	2.3978223618840575
2006	2.6944487005026194
2007	3.040801936009206
2008	3.0203072779836426
2009	2.5200732678331885
2010	2.7931330982872655
2011	2.802748325009121
2012	2.7454155375440523
2013	3.099078187178332
2014	3.0768533469906822
2015	2.7887493448856833
2016	2.7471088359501117
2017	2.9318216433432833
2018	2.906612852146441
2019	3.087999559146525
2020	3.350469618910544