Year	% of total merchandise exports
1960	0.3248259860788863
1961	0.1902044698050404
1962	0.3980891719745223
1963	0.2720559657986786
1964	0.044702726866338846
1965	1.2252591894439209
1966	2.75974025974026
1967	3.2106499608457315
1968	0.45620437956204374
1969	0.2901963763436776
1970	2.045924680501374
1971	1.6471769621975316
1972	0.9010181179455486
1973	0.7341502479098175
1974	1.944916553620341
1976	2.093490552812349
1977	0.5797627040563786
1978	0.12718570083204692
1979	6.706304527764496
1980	3.3618608416578724
1981	0.6256122190516965
1982	0.6256122191021901
1983	0.6256122190806653
1984	0.6256122189770511
1985	0.6256122190814895
1986	0.6256122190460036
1987	0.625612219050317
1988	0.6256122191750312
1989	0.6256122192125765
1990	0.4024002112121185
1991	0.7784045326725649
1992	1.1390397182065375
1993	1.8968989064727795
1994	2.586647764932863
1995	0.6162385206959762
1996	0.16661565510036894
1997	0.2561118025540657
1998	0.3397322192390825
1999	0.20906034770212875
2000	0.40167630243760616
2001	0.32465867145373317
2002	0.31498739240508467
2003	0.334114695939938
2004	0.3122027952865541
2005	0.29214432226440945
2006	0.28240929130530656
2007	0.4422146177076243
2008	0.6160372901358999
2009	1.1226143834130893
2010	1.332383763253385
2011	1.6658435736563453
2012	0.8153569959132979
2013	0.07824848872257732
2014	0.03877843478674281
2015	0.07024131969473298
2016	0.21128881652818116
2017	1.2711924739319325
2018	1.1516098048393306
2019	1.3857712580524106
2020	0.8845628022903756