Year	% of total merchandise exports
1960	8.543646408839779
1961	8.533743475018642
1962	7.519872813990461
1963	7.898677314699276
1964	6.415430707901057
1965	7.159106419764321
1966	5.688420736964426
1967	5.526435378636125
1968	5.691994563153259
1969	6.1759977962061825
1970	6.065714407592373
1971	6.30584717833724
1972	7.244284154233253
1973	6.873822170752657
1974	3.8105804461727497
1975	2.6541499909447324
1976	2.299785438498232
1977	2.4510487526436417
1978	2.913023007053424
1979	2.166143743746608
1980	1.6196075357320163
1981	4.57313939146591
1982	4.51318062106928
1983	4.207686244138015
1984	4.536146108455542
1985	4.11352508264414
1986	5.3397745899233175
1987	5.180723658514958
1988	6.295257462345099
1989	5.9997973259374096
1990	5.678129691141814
1991	7.014440936004236
1992	7.4042440234690154
1993	8.361500881968276
1994	9.964334326542716
1995	10.057321357038566
1996	7.90654607498103
1997	7.741426999608699
1998	9.15901596572417
1999	7.159045416401663
2000	7.226890123172619
2001	8.887417248229294
2002	11.117086583014512
2003	9.050626044340646
2004	10.35572900273266
2005	6.6591098323360045
2006	6.838940071579608
2007	10.909731931099264
2008	12.791691079698259
2009	15.428000320832997
2010	13.508850091021763
2011	8.387468095445202
2012	10.378391673863115
2013	10.450227273514022
2014	10.101790660010435
2015	11.627844040811272
2016	10.487551094085562
2017	8.565048892292442
2018	8.021065050056311
2019	9.657167329344716
2020	12.342437538469017