Year	% of total merchandise exports
1960	1.6837912575152134
1961	1.7088301547864115
1962	1.4359073988113977
1963	1.4675881549138923
1964	1.576397067894797
1965	1.7860944740239848
1966	1.4918510102687963
1967	1.4619751171222342
1968	1.3635230655874404
1969	1.555609541944254
1970	1.5156471557672624
1971	1.6378964820481068
1972	1.6183893590937428
1973	1.772361095948849
1974	1.8377823426653517
1975	2.220691245524374
1976	1.73683514333657
1977	1.8750432651574833
1978	1.5136911875086136
1979	1.2848919109181431
1980	1.256344231109659
1981	1.9535331881700118
1982	2.551775524668909
1983	3.217423054715137
1984	3.091073752775443
1985	3.1043176822758802
1986	2.7360610508077117
1987	2.493903289485459
1988	2.536056566157224
1989	2.2043954788809565
1990	2.375641692515269
1991	2.3714995495858466
1992	2.1673493692555694
1993	1.980270366982535
1994	1.8836183099006865
1995	1.945220300066994
1996	1.852419623170852
1997	1.776628835320428
1998	1.8752090982133336
1999	1.56618183127798
2000	1.9582684107188548
2001	2.2922904782792233
2002	2.3821713823624453
2003	2.5730711339869656
2004	2.924025131468327
2005	2.6099138305653327
2006	2.678968479131755
2007	3.3328336059187538
2008	4.202561854424854
2009	4.767584952057055
2010	4.063299710955979
2011	3.2270985575114404
2012	3.6412973134858437
2013	3.782264369687432
2014	3.7677972475518158
2015	3.4386017506928974
2016	3.252664895425917
2017	3.2404844665755035
2018	3.1117121914572716
2019	3.5411430690189434
2020	3.4096810439695457