Year	% of total merchandise exports
1960	0.8070974745946715
1961	0.7245424857309333
1962	0.7367784721055575
1963	0.5785163626655145
1964	0.659652558543812
1965	1.313153075084331
1966	1.5513766479506639
1967	1.0458394703234892
1968	0.8462270171340501
1969	0.6279676082807251
1970	0.5361732180971581
1971	0.6630959710109275
1972	0.9135336932461711
1973	0.8560228168261078
1974	0.9635345261685715
1975	1.0319916465436298
1976	0.9992024098317979
1977	1.241274520099784
1978	1.432212693808653
1979	1.5484023989328388
1980	1.8222670294630343
1981	2.3295520899566924
1982	2.308306062856781
1983	2.2787141024358046
1984	2.549320541338564
1985	2.262214739592629
1986	2.1859855268477695
1987	2.1710892318575494
1988	2.141047073739472
1989	2.075274445681262
1990	1.8917038201985679
1991	1.6978611532146188
1992	1.7597729927017736
1993	1.710659842536821
1994	1.9695137046887154
1995	1.7556904847761106
1996	2.011990385524258
1997	1.9881596878802903
1998	1.9198815866743415
1999	2.1831079660834996
2000	1.541063815032723
2001	1.4695232916333167
2002	1.6324895118260736
2003	1.7548755648757168
2004	1.9696564616749856
2005	2.0925032747661194
2006	2.3808349227352785
2007	2.6802347712204186
2008	3.041814539615929
2009	3.4389395383240906
2010	3.8786551762788757
2011	3.8673368623552293
2012	3.9568083873484277
2013	3.716470138261153
2014	3.8458168001557915
2015	3.950638896263077
2016	4.150254556435697
2017	4.329590023299376
2018	4.300734546192524
2019	4.261648775619014
2020	3.7017231023137276