Year	% of total merchandise exports
1960	5.255358560465732
1961	3.559569126103507
1962	4.3112699740580185
1963	4.141593347359053
1964	3.572852171467664
1965	5.38718322877473
1966	6.206027594518662
1967	2.988546920024561
1968	2.37639064645335
1969	1.9654598271954613
1970	0.9996295998859299
1971	1.2489941553292008
1972	1.6491476753690475
1973	0.7320423442189937
1974	0.9518261398661354
1975	1.4469297275750737
1976	0.9145011765785014
1977	1.721023901072585
1978	1.6613107950262522
1979	1.4317020120186743
1980	1.2964860841673045
1981	1.7194059366171757
1982	1.6090715773283981
1983	1.768223602187877
1984	2.2381764170372054
1985	1.9234094656686924
1986	2.067109191343159
1987	1.9336930363682077
1988	2.0118178443559027
1989	1.6467971754578599
1990	1.5780426464293575
1991	1.4404849598453033
1992	1.3780150637346853
1993	1.5027159658553604
1994	1.635108453636717
1995	1.7809130791017738
1996	1.7236640054191996
1997	1.7062499665219535
1998	1.951405648607282
1999	1.9287594640704182
2000	1.8558079124536349
2001	1.8476098924472013
2002	1.986800447676978
2003	2.083875471380043
2004	2.2228881340035183
2005	2.4901459725916175
2006	2.729905036615715
2007	3.1530090190677087
2008	3.4286483819383955
2009	3.796379632610005
2010	3.9671614016128522
2011	4.179287130916892
2012	3.9306921987413492
2013	3.780486062058821
2014	3.975232831194384
2015	4.3260976713332555
2016	4.616673437557616
2017	4.807621038788153
2018	4.830827431997712
2019	4.650670150623771
2020	3.9850008480123695