Year	% of total merchandise exports
1960	3.106479632386462
1961	2.7273747614950055
1962	3.076245852103621
1963	2.1336013098899063
1964	2.4436087231825887
1965	1.8338363324079405
1966	1.6825472233675742
1967	1.8033703618557713
1968	1.530344271423164
1969	1.598680869725787
1970	1.7097973925326946
1971	1.6304301032344821
1972	2.4235803514539187
1973	1.5654337348018226
1974	0.9344802849540538
1975	0.8187060773110436
1976	0.9681918936939982
1977	0.875819490033691
1978	0.9999975268644351
1979	0.8541060949699117
1980	1.6911605088459867
1981	1.158109383449712
1982	2.8586565113087214
1983	2.7235300687246773
1984	2.3077195462713025
1985	1.6462622748873033
1986	1.5607284252323506
1987	2.1489750277604345
1988	1.6386138869613944
1989	1.2568333590493044
1990	1.9341323447887744
1991	1.8167758852941185
1992	2.921108011863082
1993	3.9038786439716566
1994	3.1558276022012515
1995	3.5193576994105995
1996	4.459527028833703
1997	4.362176929531398
1998	4.930024768014183
1999	7.153349854579663
2000	6.011760871533372
2001	4.5362495735267965
2002	4.686977056421888
2003	4.879410289448534
2004	4.852298766175446
2005	5.4937600037811585
2006	7.2295960547852856
2007	9.817853957163559
2008	12.063402030699724
2009	10.440979244423692
2010	12.017323976993403
2011	13.974318644251621
2012	14.242054860574818
2013	14.606207124840271
2014	15.185483177122904
2015	16.365550715350025
2016	15.263246515808532
2017	16.62678376209412
2018	17.912428219273952
2019	18.263566550562796
2020	16.074737119842588