Year	% of total merchandise exports
1960	90.14336917562724
1961	86.66666666666667
1962	92.22672064777328
1963	93.01270417422867
1964	91.996699669967
1965	93.01412872841445
1966	89.18737407656147
1967	90.6120988802633
1968	86.63563829787235
1969	78.17340876499047
1970	72.29190648195927
1971	67.51765868710976
1972	74.82583752848775
1973	69.14251083674014
1974	76.08588831448021
1975	68.3086054696203
1976	68.98178196320471
1977	66.93054417070606
1978	58.078326517072554
1979	71.38837790141181
1980	53.95722373663242
1981	43.14744678594937
1982	50.574582466421035
1983	54.38393103498107
1984	47.553959218935184
1985	35.35908421321005
1986	39.86573786058112
1987	40.83580697727181
1988	59.640816471419
1989	51.922190798699376
1990	49.67178985044509
1991	56.24365343367154
1992	43.78529386292122
1993	48.04952831722418
1994	37.74101234854754
1995	38.3836544257149
1996	44.48139648086424
1997	44.219821348197726
1998	41.62857008639063
1999	47.79476990337897
2000	49.23673107446378
2001	42.529653388914326
2002	34.78181742080045
2003	32.253755845401514
2004	31.570760744104465
2005	30.41905502450366
2006	31.16800565135564
2007	33.34638361351169
2008	21.045951059473058
2009	33.334543410633366
2010	26.32219763817403
2011	28.467534326610526
2012	31.32698192792564
2013	30.93006278513443
2014	36.8646282323822
2015	34.499468449198126
2016	33.16047995749572
2017	37.95254640236859
2018	38.78727873579796
2019	33.79783392194498
2020	33.24740646139882