Year	% of total merchandise exports
1960	0.48618784530386744
1961	0.6664802386278896
1962	0.8638049814520402
1963	0.8485150985774894
1964	1.0646990368187783
1965	1.21024614404659
1966	1.141432694830753
1967	0.8969014491184378
1968	1.1179759571173584
1969	1.2050317719207777
1970	1.3522373769849483
1971	1.4470718807687517
1972	1.1510166184529425
1973	1.188512505822376
1974	4.666757273259313
1975	2.5931863574101426
1976	1.6012835810395816
1977	0.88607071446364
1978	0.9017686129484958
1979	0.5143093706773916
1980	0.8533667790232813
1981	4.151376956971783
1982	4.891017615636024
1983	4.568960065113484
1984	4.285027689922254
1985	4.216880812399397
1986	3.3302711197447183
1987	4.474714842002894
1988	3.7265496207110083
1989	3.5629304923776806
1990	3.004594905148996
1991	2.0931169678500705
1992	2.3634488653197785
1993	1.3940466684256925
1994	1.428612412013166
1995	1.4870456068350493
1996	1.5495406891404178
1997	2.2500250164582534
1998	1.9344951076350185
1999	1.9749596843064086
2000	2.9012635982370227
2001	2.4205466026951385
2002	2.5324746101668456
2003	2.3960223879473483
2004	1.873845625011511
2005	2.8734708408188108
2006	2.0505578674492817
2007	1.5430016902649855
2008	1.8455711121899012
2009	1.4713634221108933
2010	1.310937602288748
2011	1.6890259947080333
2012	1.618460823370571
2013	1.5807765870717578
2014	1.8383536917387429
2015	1.5780162094766275
2016	1.4606998488563536
2017	1.6226639600151957
2018	1.6961569366233484
2019	1.635643468090495
2020	1.8308474799430672