Year	% of total merchandise exports
1960	0.303161541792984
1961	0.3498662276188516
1962	0.0848716316571186
1963	0.2448672066302505
1964	0.33272334054233904
1965	0.08001066808907854
1966	0.08952551477170993
1967	0.07377895824110964
1968	0.03377807802736024
1969	0.011227124733355787
1970	0.008069071249899137
1972	0.009177258752810535
1973	0.0057781758298905035
1974	0.0010846928149947934
1975	0.025015947666637478
1976	0.009284620026925398
1977	0.0008458447874814971
1979	0.00464530214787158
1981	0.0057231156641675725
1982	0.0035321211093685976
1983	0.00936355890146727
1984	0.009220143498960639
1985	0.01459341730332167
1986	0.01504574942907106
1987	0.015045749429989042
1988	0.046719389597111055
1989	0.05441084113895697
1990	0.053239872333485025
1991	0.04059788320268601
1992	4.597048923415232
1993	6.049791043194412
1994	3.670724076951747
1995	4.689207953677483
1996	7.731347714339769
1997	6.59260725792442
1998	9.324271572537269
1999	17.147457264323773
2000	14.429562646649707
2001	11.500731172253733
2002	11.545976177676492
2003	9.888469261990092
2004	10.451079003052957
2005	11.484188940836528
2006	10.637552946454832
2007	12.70721178967876
2008	19.63738256878172
2009	18.56648967827082
2010	22.270178260949695
2011	21.755690344803156
2012	21.732011223089575
2013	23.284893417964494
2014	28.219167027593468
2015	31.578340469911254
2016	32.831178443338686
2017	30.33158092288079
2018	30.06216677340135
2019	28.21005092332523
2020	25.01618978327213