Year	% of total merchandise exports
1960	2.5089605734767026
1961	2.0080321285140563
1962	3.076923076923077
1963	3.0852994555353903
1964	4.455445544554455
1965	5.729984301412873
1966	2.2834116856950972
1967	3.8915322147891103
1968	11.702127659574469
1969	4.456561135887293
1970	2.4365233728945874
1971	27.12245767138369
1972	20.30500968468156
1973	27.50169484561497
1974	16.945795157905515
1975	16.545136372780387
1976	12.319727974462909
1977	19.60863728192186
1978	26.42111801518798
1979	17.818071009810957
1980	30.229188509121407
1981	36.275386588398646
1982	20.578838632838973
1983	12.980444613850928
1984	22.32541063456587
1985	20.724215316742452
1986	16.27279083174843
1987	19.947456425821432
1988	18.088921453954608
1989	16.471708907000938
1990	18.24589474913381
1991	12.470875106889197
1992	18.874768600181575
1993	17.68461467231716
1994	21.94469962541776
1995	25.546646073948835
1996	25.250351724033276
1997	25.65559431693908
1998	26.186098826061606
1999	25.505486425705758
2000	28.029918876904823
2001	30.104661027815787
2002	32.42465275022428
2003	38.67377155531847
2004	38.87572416028483
2005	40.69576281278802
2006	43.08431207134576
2007	51.07435520535334
2008	46.58516202903614
2009	43.72151986570412
2010	50.76639106122238
2011	43.318539231266385
2012	43.92412417394581
2013	46.16924102627667
2014	45.61464887797559
2015	42.41688503638122
2016	44.96342592583647
2017	42.51790884479677
2018	35.40090843698949
2019	41.13382268211766
2020	38.672234409685046