Year	% of total merchandise exports
1960	4.382848981523138
1961	3.8393339251951306
1962	3.2465399829613126
1963	3.1243175242168824
1964	2.9609453077541104
1965	2.9081793668884526
1966	2.819374335252309
1967	2.5065190805056825
1968	2.5949658457826357
1969	2.581389922371744
1970	2.398327836092444
1971	2.5537727401048134
1972	2.6121940407070583
1973	2.773391263000062
1974	3.8665543828082245
1975	5.704045355495511
1976	5.094475108089779
1977	5.152597156489243
1978	5.030867768383047
1979	4.048961650227458
1980	4.4054899056928845
1981	5.294708725261494
1982	5.021542258186449
1983	4.638239179448109
1984	4.0064072727475635
1985	3.4525041895353747
1986	2.653856698839348
1987	2.1693931368829062
1988	2.0901125464129597
1989	1.9969654071856209
1990	2.0562356728212117
1991	2.0501234839930675
1992	2.017201806609026
1993	1.8709435289838725
1994	1.6179780917770867
1995	1.4687554095323196
1996	1.4828556092509926
1997	1.4661530921181438
1998	1.4968140308276698
1999	1.389507046801401
2000	1.2903324950225759
2001	1.412431115376376
2002	1.4508203304059595
2003	1.4769962951817646
2004	1.5722359982855816
2005	1.6054168934925686
2006	1.4622160349616338
2007	1.5427162135699275
2008	1.7762743831858976
2009	2.1416104197412524
2010	1.995782163438507
2011	1.7450038976677766
2012	1.8857631744435328
2013	1.8753117131828079
2014	1.890699342055247
2015	1.7649897024858812
2016	1.754278166307139
2017	1.6545175444873117
2018	1.5754887334670276
2019	1.517721856595014
2020	1.4148941921426887