Year	% of total merchandise exports
1960	5.792731950474353
1961	5.707867038315929
1962	4.823372685929533
1963	5.25821256911568
1964	3.3267786914551305
1965	3.363254175661857
1966	2.8629856850715747
1967	2.61209993331724
1968	2.6308842404865485
1969	3.0556629541401117
1970	2.9343972270621097
1971	2.703410399955792
1972	2.3869376983496347
1973	1.8744783005729702
1974	0.9534496461652846
1975	0.5846750240163481
1976	0.3673508552417009
1977	0.3729149005338554
1978	0.4855838081280454
1979	0.3446439256362663
1980	0.2509339884037821
1981	0.8000875467111578
1982	1.0398232455554108
1983	1.235849595675142
1984	1.3915227457414707
1985	1.3437136307777133
1986	1.4405592306932367
1987	1.5264619261141616
1988	1.5952765601665162
1989	1.7585930498817237
1990	1.6694076923606842
1991	1.7981043478863274
1992	1.6501385475465362
1993	1.7105286105277704
1994	1.9424631315836252
1995	1.9790321477866357
1996	1.4675868759034825
1997	1.3758442267419069
1998	1.5524454268071337
1999	1.1756532889991362
2000	1.3886024007043525
2001	1.7744944256315964
2002	2.0449457436469554
2003	1.7751832806032035
2004	2.0383512582489582
2005	1.104370090993118
2006	1.2277890931798885
2007	2.33999392643339
2008	3.1404828790485846
2009	4.175729163452948
2010	3.046308164564516
2011	1.378122552783152
2012	1.278461015418849
2013	1.3530724465009807
2014	1.2526462981713522
2015	1.4203745338090656
2016	1.1653719874238175
2017	1.066966461957537
2018	0.9331126308318045
2019	1.25874528521479
2020	1.465399375435574