Year	% of total merchandise exports
1960	8.041382553491653
1961	8.845696152320508
1962	9.247842170160297
1963	8.77417001094491
1964	7.6898326898326905
1965	6.983061681048258
1966	6.3941605839416065
1967	5.747419395947496
1968	5.883090817862518
1969	5.463572439512053
1970	4.83303702558553
1971	5.8392482102068035
1972	7.463616039457214
1973	4.921351375470282
1974	5.67205302799327
1975	6.117898277539991
1976	6.413958940029242
1977	7.088232819488945
1978	7.212112250609942
1979	8.270341196369534
1980	7.599906322192804
1981	6.838417920239936
1982	7.058517309102956
1983	6.494017458150143
1984	6.357311665757165
1985	6.115922343829776
1986	6.679052976346518
1987	6.536870655937429
1988	6.488925835247926
1989	6.169731225763163
1990	6.1328511403279125
1991	6.413625631406288
1992	5.810576177294762
1993	7.968819345649182
1994	6.9022872543971046
1995	6.8646347873080105
1996	8.571856114686028
1997	8.45472548501986
1998	8.05166059145276
1999	2.3631977438941507
2000	3.551709288972598
2001	2.6841743146068073
2002	1.3866357286362478
2003	0.6589764356717855
2004	0.6110512009775843
2005	0.42494965197004114
2006	0.4584523733348043
2007	0.44788977868494906
2008	0.43693669150070846
2009	0.30328299919529983
2010	0.21563901723287343
2011	0.18227660030123316
2012	0.5357924322140193
2013	0.5951947555083439
2014	0.7637845271235865
2015	0.4624319912128532
2016	0.8544223674960265
2017	2.1157467555820877
2018	2.355089533599524
2019	0.33444023168754605
2020	0.8886612828292932