Year	% of total merchandise exports
1960	81.03048836993791
1961	82.69031321302634
1962	79.3145956607495
1963	80.4089709762533
1964	73.03625913574115
1965	70.50938337801608
1966	71.58641471529914
1967	77.43102977328599
1968	73.63679642582488
1969	76.07810268827218
1970	77.43777221131496
1971	80.17403899209123
1972	78.41094139715128
1973	69.58891282528336
1974	61.861802269373634
1975	54.65850256507247
1976	62.04283747857998
1977	63.75412948581155
1978	64.62450284157478
1979	63.10761788052588
1980	51.507621911328386
1981	43.37659325136525
1982	49.42670630308214
1983	45.29180545452225
1984	47.71357031847448
1985	46.817372454904394
1986	54.01633709823129
1987	55.31196983680997
1988	55.11544291882603
1989	51.861974013038534
1990	57.07252503843504
1991	59.128988885219435
1992	57.23576175967791
1993	54.1351994578873
1994	52.44228834542132
1995	45.4217461862904
1996	44.34087702173157
1997	40.482241878046295
1998	42.29927424305563
1999	51.26726846232593
2000	49.1849000315753
2001	48.25090263478198
2002	52.27756911738673
2003	52.86145174861291
2004	48.934213094584216
2005	47.785681463644195
2006	45.160845779905756
2007	42.05020166205786
2008	42.16842223697543
2009	43.680400513959164
2010	39.36522268423912
2011	39.33199500812637
2012	39.01237218132148
2013	36.58279908792687
2014	36.35164368701736
2015	37.257916560453445
2016	39.10572599160512
2017	39.93638681467586
2018	39.347584554355954
2019	36.6820732028922
2020	37.123678433601334