Year	% of total merchandise exports
1960	6.132075471698113
1961	2.9069767441860463
1962	6.821518285322807
1963	0.9310081289515737
1971	0.2544529262086514
1972	1.8911439114391144
1973	0.7042830235033987
1981	9.890765250737923
1982	3.474291865618145
1983	3.0890444304119558
1984	0.5865741857469865
1985	3.8111736682546553
1986	3.231591247240366
1987	2.8845737351600738
1988	2.9710121201732607
1989	1.94676491098631
1990	3.339447738864844
1991	1.3914504627279776
1992	6.487825943900634
1993	7.559697825140972
1994	4.955964902154916
1995	3.9744154125324336
1996	4.772900922189823
1997	4.3748949584483565
1998	5.723175198324183
1999	5.945379429090109
2000	5.85005432172924
2001	6.637916382298082
2002	6.134215038967509
2003	4.004349764411341
2004	4.833716729075134
2005	5.107799151838155
2006	5.077554165864572
2007	5.192325268947124
2008	6.886474450583593
2009	6.323664374409652
2010	8.285357982391291
2011	9.648667360732901
2012	7.81471888652272
2013	8.523201865732506
2014	8.634044058086225
2015	9.05319501188686
2016	8.501209214504945
2017	8.943440665052659
2018	8.38495098004739
2019	8.211841081948
2020	7.400863218345494