Year	% of total merchandise exports
1960	6.032356951522595
1961	5.861759176075057
1962	4.782522415255002
1963	4.829371695726124
1964	4.393347239871804
1965	3.923848711182671
1966	3.3512101021985687
1967	3.0205879483140743
1968	2.2601373808996232
1969	2.083464180289024
1970	1.7882345642632258
1971	2.235481304693715
1972	1.933507392109156
1973	1.5731785944551904
1974	1.1897266116911078
1975	1.389886833123765
1976	1.4168616207278675
1977	1.473773913915276
1978	1.696526616011615
1979	1.86060894551595
1980	1.8303486248534901
1981	1.7763022794167977
1982	2.01794438869126
1983	1.870430737095294
1984	1.7010610726623328
1985	1.6897471355195575
1986	1.8108191422779796
1987	1.8758192848215103
1988	1.9040205070874223
1989	1.9139439390833684
1990	1.6211656990671781
1991	1.4121894568788391
1992	1.3256817908559757
1993	1.3869952178827396
1994	1.424840745614973
1995	1.5105550015366747
1996	1.3865547203436366
1997	1.2684598324721874
1998	1.0737766818186227
1999	1.133977566078777
2000	1.5099623658899146
2001	1.3173114885158848
2002	1.2515689404810044
2003	1.527659861809251
2004	1.516993254429695
2005	1.6107852874052495
2006	1.331889648646187
2007	1.511254431588115
2008	1.771485215227132
2009	1.5336212229416841
2010	1.7124281534452515
2011	1.9437239909976902
2012	1.6997934230279657
2013	1.6183800446304561
2014	1.4903905168893874
2015	1.5858197771472584
2016	1.4230051803575359
2017	1.5242468769841988
2018	1.7338441391711794
2019	1.6330924532316997
2020	1.314726774644717