Year	% of total merchandise exports
1960	4.358981314862205
1961	3.8183871296615393
1962	3.2560026390619337
1963	3.115696715121569
1964	2.9576211960340886
1965	2.8936163855805654
1966	2.824583951056799
1967	2.5486994243085004
1968	2.5781131833104145
1969	2.5594275667558875
1970	2.372364427609317
1971	2.5045802364898084
1972	2.5654504307195456
1973	2.6964193115766344
1974	3.6086452290640003
1975	5.396587850537462
1976	4.715644236658028
1977	4.82653245206569
1978	4.766961009809516
1979	3.8301158789431167
1980	4.108450730613954
1981	4.936794835236961
1982	4.71694129321365
1983	4.443825166462547
1984	3.804376786809897
1985	3.2923763457005295
1986	2.595625550608954
1987	2.088894590996056
1988	2.010642819294985
1989	1.9445762781513245
1990	2.0367112431117005
1991	2.0165406646551243
1992	1.9889641596555967
1993	1.8210791063895
1994	1.5537921299221407
1995	1.417481455514069
1996	1.4274677122384511
1997	1.4340044907656284
1998	1.4720873018990699
1999	1.3794741514105495
2000	1.339134859586486
2001	1.4633970146354862
2002	1.5133041776897393
2003	1.5251303185151788
2004	1.619250964479097
2005	1.656364648727875
2006	1.5307480638719089
2007	1.6041316676395836
2008	1.849576907471046
2009	2.092145351583716
2010	2.0384077030277967
2011	1.7072441315526998
2012	1.787079062107388
2013	1.7694663114593538
2014	1.7879862377916764
2015	1.645002777959396
2016	1.6543085278328276
2017	1.6156691068915614
2018	1.5189366735407834
2019	1.4362122429843396
2020	1.3356115268152313