Year	% of total merchandise exports
1960	12.944393801276204
1961	8.242862887012464
1962	9.864815491413955
1963	8.487557171967909
1964	7.774071458909909
1965	8.29149371729936
1966	8.867614792219861
1967	10.134488693691022
1968	12.26263783192328
1969	9.19259269635378
1970	12.265569069686212
1971	9.522140301577418
1972	9.831725742821012
1973	12.497342004750289
1974	4.732114962334986
1975	4.025990779006713
1976	6.290546245611457
1977	8.093128251388782
1978	7.613798077232657
1979	8.240190812781544
1980	7.717217587728145
1981	9.563125379079755
1982	9.490020943850503
1983	9.295892115243703
1984	8.943779356172985
1985	9.81432981995046
1986	7.925988282078554
1987	7.775045567818532
1988	19.70270246342463
1989	20.55566132466711
1990	22.788535469987423
1991	4.5372110336449945
1992	3.8474411791868057
1993	3.2626077217541183
1994	13.554500979141046
1995	14.334972937093049
1996	16.00153699424744
1997	14.230023842224194
1998	17.50572091100453
1999	16.433048589238204
2000	3.8172817720882337
2001	0.6630925484160479
2002	1.8806283721505446
2003	2.368290623165837
2004	3.216928308363926
2005	4.606800720314861
2006	4.508944775862537
2007	4.131377022606615
2008	5.127870738121673
2009	1.6589941724294253
2010	1.0573400452924582
2011	0.9890361364656912
2012	0.8363876006128449
2013	0.5760955477569107
2014	0.4597398555708715
2015	0.8364294609005911
2016	1.5593211349786256
2017	1.4762283552308524
2018	2.057827624645001
2019	1.3298904830976235
2020	1.0925314757539837