Year	% of total merchandise exports
1973	83.72249966257255
1974	95.38220400289364
1975	91.71485213943498
1976	91.42543343531811
1977	85.93547457871237
1978	87.23317153049885
1979	77.20001843912783
1980	75.06004580237949
1981	81.33147113594042
1982	81.0615711252654
1983	84.56050684129266
1984	94.44225018337752
1985	93.67505720823799
1986	93.99947031894366
1987	85.37534816604584
1988	88.54520567118296
1989	89.78347359985719
1990	87.11721884558253
1991	88.70142731924841
1992	81.09833035746432
1993	81.94768471125116
1994	76.96233591630262
1995	80.42592692679149
1996	70.9461397646634
1997	76.72560813158353
1998	79.08032129237054
1999	86.26113601581234
2000	88.24808341390535
2001	82.50384787693818
2002	80.18798507406582
2003	79.89481247054144
2004	77.23537231922593
2005	71.36739483990289
2006	64.5104754379944
2007	73.42515804991136
2008	66.09389417605394
2009	44.42405380442856
2010	66.21837266145606
2011	59.2181931987304
2012	64.2333003695938
2013	77.78598869332353
2014	76.46244526660666
2015	69.05046223555081
2016	71.20786368330585
2017	68.3103203364543
2018	70.99701836540184
2019	69.39758105304037
2020	69.43188725985641