Year	% of total merchandise exports
1960	2.1780484836956253
1961	1.6846732037192735
1962	1.756054488267287
1963	1.670408123768172
1964	2.4107481235005976
1965	1.924191475387515
1966	1.7072418401197214
1967	1.5161129308510035
1968	1.646439665672199
1969	0.9648387941610517
1970	0.941130672422232
1971	1.0907566991434703
1972	1.2152437127112006
1973	1.2957652255074463
1974	1.1390251982029986
1975	1.1281327703224968
1976	0.9742641568584879
1977	0.935493035248505
1978	0.9613923748401689
1979	0.8868044850490182
1980	0.7988406770211327
1981	1.7702995756981879
1982	1.799808289032799
1983	2.5069777760312344
1984	2.454012232502806
1985	2.266575823752884
1986	1.5012620669717056
1987	1.4792821477595615
1988	1.5858681164670028
1989	1.488530866324524
1990	1.593244440817401
1991	1.656362522420474
1992	1.7660663754182089
1993	1.8530797738505542
1994	1.704966413824573
1995	1.7488170971307861
1996	1.748912112754515
1997	1.93900609591701
1998	1.910993338364057
1999	2.17277071824983
2000	3.5512915175192283
2001	3.522955425430037
2002	3.6158841790363896
2003	4.076201067434582
2004	4.118567186131045
2005	4.623485282073866
2006	4.910519141676307
2007	5.191987012121386
2008	5.580178904299014
2009	5.166744309037226
2010	5.28758236074751
2011	5.616502881670763
2012	6.111164233875435
2013	5.924668163708483
2014	6.061778685719679
2015	5.556409878869895
2016	5.498776776838016
2017	5.6815525975384285
2018	6.1308210629424895
2019	5.372457903012185
2020	4.650072329081299