Year	% of total merchandise exports
1960	15.397168960762087
1961	15.46317093608279
1962	15.136057375578085
1963	13.91450526287107
1964	13.653565377321659
1965	13.517728415362601
1966	13.075886789195035
1967	13.039019592416143
1968	12.935899325627782
1969	12.347492245979238
1970	12.598562661977681
1971	7.887753589697087
1972	12.274517571498759
1973	11.931639553954886
1974	13.08083470556913
1975	14.349682954259801
1976	13.66188419076183
1977	12.381455463022666
1978	12.473290121451974
1979	13.531528525397537
1980	15.135831149756761
1981	15.512390311475688
1982	13.449733188144156
1983	11.321544925618669
1984	11.772486884512077
1985	9.964078866419495
1986	9.290994183176817
1987	9.237290451793088
1988	10.762713511478156
1989	8.840181243210797
1990	9.617659109409765
1991	8.36012307211638
1992	8.234659839287243
1993	6.502306439095536
1994	8.65726091560619
1995	8.56056354797061
1996	9.584975724283922
1997	8.108968020621129
1998	8.224448387194203
1999	7.096089684856954
2000	7.164936351558356
2001	6.509322345480857
2002	5.8961446440168634
2003	5.031138702492831
2004	6.657500784953607
2005	6.426176564521359
2006	6.046021067939577
2007	5.8698330008927035
2008	7.082575915374448
2009	5.782614129503548
2010	5.146852508700041
2011	5.253901189705416
2012	6.385420451413096
2013	5.921708082273596
2014	5.83896711586537
2015	3.9747870388777082
2016	3.086436849068079
2017	2.9616660748441355
2018	2.758264831903735
2019	1.783050469840226
2020	1.141394264791618