Year	% of total merchandise exports
1960	5.6432695520564575
1961	5.516046429175694
1962	5.176581270379062
1963	4.589228227666022
1964	4.663036868737906
1965	4.349324846330033
1966	4.510936859531143
1967	4.280242136414756
1968	4.393595210825104
1969	4.267220296313084
1970	4.2493721331194525
1971	4.1460488073565545
1972	4.001360455082404
1973	3.9647616316410854
1974	4.741288125558793
1975	4.69563681201358
1976	3.973475611755606
1977	3.7856549855023554
1978	3.7056745069717243
1979	3.880973136044778
1980	4.328282445811311
1981	4.553069456594012
1982	3.836795607177305
1983	3.194209440519696
1984	3.20624136417969
1985	3.1950760218257885
1986	2.9965264310870023
1987	2.8399145863894177
1988	2.849771222841027
1989	3.0224015645065294
1990	2.9673421928884447
1991	3.2586239406218622
1992	3.6012973392523873
1993	3.9445178844153466
1994	4.215151448207284
1995	3.836451166775693
1996	4.031414220377996
1997	4.462538784521486
1998	4.7700804367220515
1999	4.337285759533647
2000	4.498626248423609
2001	4.483332127697412
2002	4.051250957830473
2003	3.6083256798066428
2004	3.634021895676845
2005	3.6917913022219446
2006	3.844121823367254
2007	3.8312549024436815
2008	4.063813700375983
2009	4.1019519751463
2010	4.487804846351411
2011	4.619166299440888
2012	4.719925469943651
2013	4.776437780576175
2014	4.797846086860743
2015	4.906998480304604
2016	4.776570077373528
2017	4.776546618639748
2018	4.700362618008863
2019	4.682333728313737
2020	4.332679126731893