Year	% of total merchandise exports
1960	0.14268289930247943
1961	0.1424715341300326
1962	0.03932467731644469
1963	0.07523761360117111
1964	0.0751000026942126
1965	0.038337153381237096
1966	0.13962793100702095
1967	0.1402693594447001
1968	0.061521312158850594
1969	0.057346592042081056
1970	0.07000712439536211
1971	0.04988263483018615
1972	0.35059970795716183
1973	0.6358554729743047
1974	0.29593465792104706
1975	0.13949097739690114
1976	0.13004710621354446
1977	0.37767611406312407
1978	0.3663349350098362
1979	0.3760179624452273
1980	0.48799083282502026
1981	0.5858358004550277
1982	0.33753125424532354
1983	0.450779185275926
1984	0.6917728044738243
1985	0.6137217828301987
1986	0.48137338125354745
1987	0.46571982429125436
1988	0.48366088198227325
1989	0.4510632271141468
1990	0.4011513308801141
1991	0.3860283496811072
1992	0.34700523756378227
1993	0.3101114935361137
1994	0.6178933157767749
1995	0.41036994734057325
1996	0.35731623010606
1997	0.33429044016492476
1998	0.41488172531457873
1999	0.5625606496757094
2000	0.3732463022391942
2001	0.4079348293998876
2002	0.5614746232044155
2003	0.5995154531330678
2004	0.6211504762285404
2005	0.7177350314119212
2006	0.7929060728639097
2007	1.1820254338639806
2008	1.162420135337443
2009	1.565413588893955
2010	1.7401676843264526
2011	1.5790410987522874
2012	2.7551384699215853
2013	2.8245082976020766
2014	2.8631587476781815
2015	2.2633905546128164
2016	2.0900984138607672
2017	2.564092356909021
2018	2.496568448763604
2019	2.166659696059748
2020	1.8693592123043672