Year	% of total merchandise exports
1960	0.8368200836820083
1961	0.45330915684496825
1962	0.6914433880726015
1964	0.23291925465838506
1965	3.8365304420350292
1966	0.5677785663591199
1967	0.4013377926421404
1968	0.6269592476489028
1969	0.46522447080716445
1972	0.2959436420368643
1973	1.0926008599826125
1974	3.4562087550088023
1975	1.8726197986028366
1976	0.1091619913178137
1977	0.38292624883715903
1978	0.886055432492301
1979	0.929652735851166
1980	1.1938815250527108
1981	0.996058789386738
1982	2.083712834213775
1983	1.6634860588046543
1984	1.433048459542652
1985	1.7278630187632866
1986	3.390869047481416
1987	1.252933269008286
1988	2.466905932442801
1989	2.4217540231024
1990	1.8327031619129002
1991	1.1869027149377689
1992	1.4893694546919982
1993	1.0506964092574242
1994	0.8370337313244639
1995	0.9261789334368402
1996	0.7338953738199661
1997	1.1024615072584825
1998	1.3315553623530458
1999	0.8420376963043907
2000	0.2499805607797946
2001	0.4809983581052584
2002	0.6038567007232654
2003	0.3690464579308274
2004	0.41783100428296843
2005	0.3731713758891876
2006	0.6940086006553209
2007	0.2576640624827963
2008	0.8596174510253941
2009	0.6016436990485995
2010	0.4478812514201254
2011	0.3743067560247589
2012	0.7319656482006413
2013	0.4751637623850941
2014	0.6571640715115024
2015	0.4725508215461911
2016	0.5212819624166577
2017	0.5810174472347873
2018	1.0390214254659782
2019	0.7019472471987286
2020	1.1215073381301417