Year	% of total merchandise exports
1966	0.014488554042306579
1968	0.013145786775338505
1969	0.02367018302456481
1970	0.2831313083883395
1971	0.2571965720864428
1972	0.07409878343509829
1973	0.12047196144897233
1974	0.06761022386022386
1975	0.5707983413329718
1976	0.26443139107199143
1977	0.43555307885204797
1978	0.5165050358933483
1979	0.8879348445550658
1980	0.5996441705794815
1981	0.7114191060263281
1982	0.6529339772944244
1983	0.6529339773197129
1984	0.9919215821510177
1985	1.7401763847681981
1986	10.03930377852539
1987	7.782753001908052
1988	5.492920177110004
1989	5.800946187794247
1990	5.376593745784574
1991	2.6853777576553624
1992	11.15105828321843
1993	7.990763988663978
1994	11.458153665086424
1995	8.943007167826321
1996	11.53620439378627
1997	10.524623836444995
1998	9.750076784953905
1999	3.708669212314155
2000	0.06664402091744552
2001	0.4141795511230041
2002	0.6184222831733037
2003	0.8403050537363134
2004	0.12280024967922425
2005	6.4338330221671916
2006	8.60303624824083
2007	10.787326341352113
2008	10.715219323014129
2009	9.313257480907854
2010	3.6403076801592382
2011	1.2254295379504143
2012	2.582914811209064
2013	5.273907426426849
2014	2.4284826770902916
2015	1.0366979431082053
2016	5.592394990905505
2017	3.398498249589076
2018	2.6315895569466843
2019	0.6588794495672923
2020	0.35368886366325253