Year	% of total merchandise exports
1960	1.9521336821145514
1961	1.6098935274962496
1962	1.5334476843910805
1963	1.5232722143864599
1964	1.520320986980375
1965	1.2142478479287102
1966	1.3775976384040485
1967	1.233367225144777
1968	1.350310206398767
1969	1.3939180875373527
1970	1.5247813841003937
1971	1.454501581854255
1972	1.5562736209908543
1973	1.542319233773174
1974	2.059877979747154
1975	3.5487740179457017
1976	4.13678626061862
1977	3.79042887825781
1978	3.256443801785673
1979	2.9506636541297664
1980	3.873669023024885
1981	5.252365691024804
1982	4.86903487691096
1983	4.309816804944596
1984	4.263269323626639
1985	2.945446403420705
1986	1.828073929847334
1987	1.6214795544642402
1988	1.6723996138259023
1989	1.6192524947340758
1990	1.819187833032077
1991	2.611233649560624
1992	1.7224321632308741
1993	1.579548283634356
1994	1.2317222140313075
1995	1.0815858328853656
1996	1.0419985864625037
1997	1.1593293110184937
1998	1.2208309319558412
1999	1.0845810782494043
2000	1.5608531478278023
2001	1.3554194700932918
2002	1.413507923952761
2003	1.613467783696972
2004	1.7734783875234301
2005	1.9863403191554374
2006	1.3535265459316166
2007	1.3912159847803447
2008	1.6374368788929592
2009	2.0438694963171242
2010	2.137318127879821
2011	2.1033205633923364
2012	1.5986172382001624
2013	1.6674390173720972
2014	1.9461519961128488
2015	1.6897242801234076
2016	1.682603912700122
2017	1.5875059632487576
2018	1.3826384206594042
2019	1.1178905403049024
2020	1.2115983604028613