Year	% of total merchandise exports
1960	4.114728892069356
1961	4.315973733687749
1962	4.220562501127527
1963	4.472447278241853
1964	4.099231943478713
1965	3.7427135978055066
1966	3.9237683499103877
1967	3.427607644164425
1968	3.9643643852400254
1969	4.510651418000354
1970	3.7145028459760843
1971	3.672323875187837
1972	3.89490191006604
1973	3.84461637653127
1974	4.707366860299793
1975	7.07135800251482
1976	8.068239784700356
1977	8.428547387417064
1978	8.708001385521303
1979	7.725725510089446
1980	7.729531805089905
1981	8.956709660385478
1982	9.601660975028647
1983	8.599245017805051
1984	6.818624855794889
1985	6.241999209798498
1986	6.4641152347946305
1987	5.691628814437704
1988	6.020044525794837
1989	6.136955811832939
1990	4.49119833106907
1991	4.63701356928692
1992	4.550199703924371
1993	4.563973644441872
1994	3.755610145050445
1995	3.743353926389149
1996	4.2136916380432
1997	5.201874770532678
1998	4.456702074922086
1999	3.3760609723275015
2000	3.145024337488271
2001	3.204950005317569
2002	3.119513805701772
2003	3.8397870333196886
2004	4.094841911993276
2005	4.828990358282133
2006	3.4677529027729337
2007	3.5863919785551897
2008	4.471624055282194
2009	4.730409708800648
2010	4.425243941183972
2011	4.016942851944435
2012	4.520392617636984
2013	5.4582539561843735
2014	5.366240097875597
2015	5.760345351686082
2016	5.908515555256658
2017	5.974611884331404
2018	5.1427903348780815
2019	5.132755890858715
2020	4.619739475301539