Year	% of total merchandise exports
1960	87.62389458182955
1961	88.20934021178387
1962	86.78875996085559
1963	87.72900968484413
1964	86.6163849757591
1965	85.70380143771841
1966	86.38609847369821
1967	85.65252987643414
1968	83.27479973964411
1969	84.39994491789106
1970	83.6499320583758
1971	84.38252985862647
1972	84.34768316787495
1973	81.97930806486659
1974	83.34855043513429
1975	80.29599236228002
1976	77.4577526845101
1977	76.6723340964282
1978	83.72882209137308
1979	82.92354171722842
1980	77.28222794984254
1981	73.2107315554232
1982	80.17597324777925
1983	83.7998143659365
1984	82.07495108182897
1985	84.54625234911857
1986	80.45662584347697
1987	80.9795623199063
1988	80.80866069676556
1989	80.91708297152466
1990	82.10608698993673
1991	79.00837917282611
1992	79.11887404045493
1993	79.20306160281262
1994	76.46149807716284
1995	74.5119940471778
1996	74.51835106218425
1997	75.60271327672093
1998	72.47062916243671
1999	67.44093173287781
2000	71.61137875922367
2001	70.38227840975595
2002	67.49341980021974
2003	71.48000435568636
2004	65.13748733734613
2005	67.37385045139158
2006	66.17392445746326
2007	65.96253928117757
2008	62.308087603378546
2009	59.34250327001847
2010	58.59250873912821
2011	58.17310797907728
2012	57.192547633610026
2013	51.921726351107445
2014	45.99633835154858
2015	46.645099548808616
2016	47.33407066725025
2017	45.94235098321599
2018	42.84327284892596
2019	42.175471774274435
2020	44.050228256335075