Year	% of total merchandise exports
1960	32.30769230769231
1961	29.68325791855203
1962	22.998805256869773
1963	25.066242713301534
1964	28.449744463373083
1965	27.860106698280973
1966	26.312684365781713
1967	29.7349709114415
1968	34.865671641791046
1969	25.20809136662795
1970	22.002167701251356
1971	14.974483596597812
1972	20.96892075314099
1973	16.95866450160955
1974	11.185628131733626
1975	6.360283443907999
1976	5.3641177796139115
1977	6.631424486417338
1978	7.593455739437285
1979	8.078602620087336
1980	5.185673686857425
1981	6.978791021627639
1982	8.727233250926462
1983	10.732657108622897
1984	8.143336534415226
1985	3.3093375829624065
1986	6.668675606448697
1987	8.595785511311217
1988	13.513559026098129
1989	11.3163133333679
1990	10.023557764935283
1991	15.210280734513368
1992	16.57037566064853
1993	15.764416796749014
1994	18.905755972389706
1995	15.154889220437553
1996	4.627694039858476
1997	6.258429535857797
1998	15.606422426283729
1999	8.459468520163291
2000	7.68668951581055
2001	8.38212745095222
2002	8.545799519964516
2003	12.302738358527181
2004	19.175799116496876
2005	10.91725318551364
2006	21.245855991837086
2007	23.497622668594346
2008	39.390388557792846
2009	41.38351680935158
2010	32.258467487137565
2011	31.62602724884281
2012	49.98160607812355
2013	55.65724162100892
2014	49.77195660687468
2015	46.14438982153109
2016	52.80488830111633
2017	54.23213484249738
2018	49.42650780349
2019	49.42650760470188
2020	49.42650801874723