Year	% of total merchandise exports
1960	79.99565869735893
1961	80.07921421380418
1962	79.89540500706339
1963	80.83237508369554
1964	79.28134747678244
1965	78.3653629949685
1966	78.69730725053309
1967	79.16304791672259
1968	78.3249474194399
1969	78.61277907623216
1970	78.18341328273979
1971	78.84518267961553
1972	75.99165538367816
1973	75.42203586318962
1974	72.98749725817065
1975	69.46171079923309
1976	71.66982719274124
1977	72.37885402674121
1978	72.5215631405649
1979	71.53097232445262
1980	69.76894367749793
1981	68.03395176488074
1982	71.35275555229772
1983	74.4168879980221
1984	74.06010102136213
1985	75.4305215281119
1986	75.77266384272575
1987	76.8627519824197
1988	74.86530353522933
1989	76.62139641793163
1990	76.55623049247137
1991	78.20075196180682
1992	75.72592560833982
1993	76.2131783693012
1994	73.86616665583966
1995	73.53707975253131
1996	72.67602891789714
1997	73.5496387939524
1998	74.24747475880056
1999	78.57452391121105
2000	78.84403466103889
2001	77.71787303719519
2002	78.4971144694046
2003	77.26271203495139
2004	74.65231381688555
2005	73.6021358089172
2006	73.24654057927002
2007	71.34553598927602
2008	68.98025365208893
2009	68.01507393432232
2010	66.83261636725965
2011	66.6271705128241
2012	65.86324353349521
2013	65.52400947740506
2014	66.686001520807
2015	68.59898420933084
2016	68.91644709841378
2017	67.4026422511815
2018	67.00139203344206
2019	68.51596530720397
2020	67.33904876268774