Year	% of total merchandise exports
1960	5.15569167942828
1961	6.194465600406194
1962	6.594982078853047
1963	6.332970620239391
1964	6.4839435467375734
1965	6.54955126981096
1966	5.838926174496644
1967	6.0793836878244845
1968	3.109656301145663
1969	3.5435292719874063
1970	3.455756369866799
1971	2.1110877214085946
1972	1.4841644948981845
1973	1.990122937900599
1974	4.405740460204914
1975	5.648207167524473
1976	3.1122906183221892
1977	5.161262834987857
1978	6.878573154038167
1979	7.6832151300236395
1980	5.452352047399806
1981	7.103681064598157
1982	4.879186219359352
1983	4.251278115284047
1984	4.846544965666562
1985	4.057449186026979
1986	4.003204218690882
1987	3.748074865540453
1988	2.6473999463334907
1989	1.9990712154039088
1990	1.4112942699421154
1991	2.5272966764571763
1992	2.2377582112768923
1993	1.6596887737603858
1994	1.8057914159281676
1995	1.939331716045485
1996	1.9932012585997612
1997	3.6811210905211964
1998	3.533645861852571
1999	2.7230377413842506
2000	2.8380282528270513
2001	3.1227373416526505
2002	3.5384288611874952
2003	3.6541602218339206
2004	5.415543820629078
2005	4.898468308238421
2006	4.643690827990201
2007	4.194319943062194
2008	4.590418722605862
2009	5.658260178016351
2010	4.986256310679593
2011	5.067081327258796
2012	4.959670339008592
2013	6.148291491054767
2014	6.170854101181736
2015	5.941997459227576
2016	5.395016577166621
2017	5.953130215708598
2018	5.280658829799561
2019	5.071391464317686
2020	5.417981618478077