Year	% of total merchandise exports
1960	4.979811574697174
1961	9.090909090909092
1964	2.528977871443625
1965	2.158273381294964
1966	2.016498625114574
1967	3.2056990204808544
1968	3.308823529411765
1969	2.625990055717962
1970	1.5239537341738945
1971	3.4715751794775547
1972	5.8253931365713845
1973	7.382077697674587
1974	6.382685003469864
1975	8.620148032207751
1976	9.428113898654495
1977	10.144295016878191
1978	9.156275567535637
1979	11.612457556053503
1980	10.114848954817834
1981	9.962148574070328
1982	6.159859610519914
1983	5.290909090909091
1984	4.5636184915707165
1985	4.6590215816365435
1986	4.659021580979212
1987	4.659021580590277
1988	4.821157015913964
1989	4.659021580872401
1990	5.08853462568855
1991	2.8961094873087476
1992	3.539379145483628
1993	3.944023912606949
1994	4.3786779377256355
1995	4.42688003551365
1996	3.0005708557563544
1997	4.4585883627169425
1998	7.316003328289003
1999	7.966441942706803
2000	8.468926309558825
2001	9.001329870647844
2002	10.83547909987864
2003	9.808883472167352
2004	10.341727903864403
2005	12.002398804165415
2006	9.607649391580553
2007	9.945526105827355
2008	9.961893560581283
2009	9.579707991974718
2010	8.163920056122043
2011	7.654156017017008
2012	5.9432202964588345
2013	5.240998414583819
2014	9.716224158001626
2015	10.400554941505197
2016	7.964337916440031
2017	11.908592873647475
2018	9.807380440845085
2019	5.417751808887102
2020	8.713880998308936