Year	% of total merchandise exports
1960	71.96969696969697
1961	79.81220657276995
1962	63.47305389221557
1963	66.66666666666666
1964	71.32075471698113
1965	57.93357933579336
1966	63.02521008403361
1967	68.40148698884758
1968	69.83606557377048
1969	82.9815142456226
1970	73.72710129310344
1971	55.61818050437171
1972	60.35408625608324
1973	60.19134880660103
1974	67.43740010655301
1975	7.335454697705577
1981	70.04337841748173
1982	72.38793373849649
1983	98.28358211964631
1984	91.38452031376983
1985	85.41810729818903
1986	86.63405529690523
1987	81.40690940429012
1988	90.23121984498957
1989	80.73126778089508
1990	90.25295961352059
1991	74.10085402013064
1992	79.45173069781137
1993	73.76291811591025
1994	65.36469577567185
1995	83.41146409319038
1996	82.749646056297
1997	65.83831060080615
1998	85.06636841603539
1999	81.32279681213927
2000	81.90603526780667
2001	88.83550541638661
2002	86.57723469139358
2003	84.48604022308199
2004	83.06480327818136
2005	90.30634872507872
2006	87.90706374038386
2007	95.26156945680184
2008	98.44057403894084
2009	96.37126880738688
2010	82.44371529810131
2011	92.34437384508873
2012	90.79463720624905
2013	90.12489153523539
2014	94.49333874385366
2015	77.22785327504818
2016	78.81990370825017
2017	66.95715738966206
2018	61.61801492892136
2019	40.567304071113014
2020	55.12753844006848