Year	% of total merchandise exports
1961	79.2
1962	74.32950191570882
1963	69.6078431372549
1964	70.45454545454545
1965	64.8
1966	63.86946386946387
1967	66.13085698123881
1968	67.21311475409836
1970	69.45372242243121
1971	62.75464298073595
1972	62.82334560874902
1973	67.81918371159054
1974	55.484350658546944
1975	72.27064392516343
1976	67.7826545147132
1977	69.71905575888503
1978	61.880661859863196
1979	72.40383658026617
1980	71.27950136564185
1981	70.71630956320317
1982	66.93550269614137
1983	73.03574323734458
1984	72.05156976579973
1985	67.51160867629285
1986	69.73590788982499
1987	59.40265915522076
1988	58.84733044733045
1989	53.82451830239717
1990	46.427489732579055
1991	49.98291182501709
1992	67.04949160653128
1993	70.39553162612418
1994	70.54238784200615
1995	56.93261952406042
1996	51.45319830164965
1997	52.507238543531955
1998	55.7493576921144
1999	56.756627373746774
2000	29.517327601406997
2001	52.1841901911468
2002	52.93091586935269
2003	65.14633532272366
2004	65.70129997913531
2005	63.49630605530222
2006	69.63818626623195
2007	66.32300026025145
2008	65.4742928459579
2009	62.313187927522065
2010	64.75940459923663
2011	70.00835286855535
2012	75.23985101434258
2013	64.56931010596386
2014	64.66111344546232
2015	68.77688473780238
2016	67.45981781406819
2017	53.83257421327229
2018	48.197280122067085
2019	51.10651200981459
2020	40.45158745000733