Year	% of total merchandise exports
1964	97.92626728110599
1965	96.62288930581614
1966	98.35164835164835
1967	97.3063973063973
1968	97.70992366412213
1969	96.5823602484472
1970	95.93769031668697
1971	96.69522950491081
1972	97.16422490187907
1973	93.98515455295224
1974	93.8321038587028
1975	97.5582400979734
1976	87.67653946453554
1977	78.6966649386556
1978	91.34321428271748
1979	91.79576009736492
1980	95.19020249967569
1981	94.87118690112214
1982	93.26925689005026
1983	92.4313352038812
1984	93.05225354239971
1985	95.97983487790206
1986	96.56446063549889
1987	94.04735642573085
1988	91.43954576610072
1989	93.54082603501591
1990	93.68321686771101
1991	91.70571418241244
1992	76.48227693176737
1993	75.41764436728245
1994	77.01626776417207
1995	76.93503326458476
1996	71.45950055598071
1997	67.0247042704101
1998	58.76996069626432
1999	63.33623622172087
2000	93.03798082580133
2001	86.5414813225159
2002	89.78102869765392
2003	84.11828063590735
2004	87.65913634425888
2005	86.99116104863177
2006	84.38543345499477
2007	86.60398753415409
2008	84.74536061818822
2009	84.326989501392
2010	79.69100331289447
2011	83.96234851790211
2012	81.65076135208982
2013	74.14807235136965
2014	78.82751562335584
2015	77.17139469117785
2016	77.35309819210644
2017	74.8449837887166
2018	74.11890565682138
2019	72.90567926265467
2020	74.26213263808866