Year	% of total merchandise exports
1960	0.5386718121884547
1961	0.6739609768273911
1962	0.8222702007441774
1963	0.8239673304181273
1964	1.3174830175187702
1965	0.9998863765481196
1966	1.2310567586234917
1967	0.990561640921704
1968	1.4449583737492149
1969	1.3083226281195826
1970	1.4991916729433512
1971	1.8611610577638351
1972	2.0223034482537203
1973	2.4997548148906907
1974	3.616058224366915
1975	3.1944458588347913
1976	2.693682938787699
1977	2.472375218353658
1978	2.4183847571559554
1979	1.8575152767027048
1980	2.2723816040998077
1981	3.1117025721754605
1982	3.8949890907038447
1983	3.733959923830145
1984	3.120704071556566
1985	3.1471530543327977
1986	2.392409137351374
1987	3.0779832635569706
1988	2.8281006060762004
1989	2.5289708207602084
1990	2.577292848238002
1991	1.9728818704407736
1992	2.048317242740466
1993	1.7951749774759134
1994	1.825239665598009
1995	1.3372352155153069
1996	1.5276272704030334
1997	1.5534481851269943
1998	1.476052918167826
1999	1.3807113036313186
2000	1.4453558656926084
2001	1.360606139279972
2002	1.4208568281194462
2003	1.290005945437338
2004	1.1343545549689382
2005	1.310180663316734
2006	1.1392031240497746
2007	1.0316107098816218
2008	1.1231185524684364
2009	1.0180074188160904
2010	0.9827503938133223
2011	1.0732563742954908
2012	1.024882654531717
2013	1.0169576620207759
2014	1.1000021137655338
2015	1.0790723929731243
2016	1.0364503134963687
2017	1.0979346772107945
2018	1.129072278642978
2019	1.1060996560176097
2020	1.3806452872290071