Year	% of total merchandise exports
1960	0.1274534794799898
1961	0.13721185510428102
1966	0.5795235028976174
1967	0.4148230088495576
1968	1.1196725258849025
1969	1.398300527051737
1970	2.07896051974013
1971	1.7691017233490924
1972	3.0262099764992465
1973	0.40195568942294435
1974	2.6143846654642093
1975	1.688491869278598
1976	1.158313468582435
1977	0.0183005678355435
1978	0.9327539460518736
1979	0.6545589483257344
1980	0.8483315995839001
1981	2.0855880824397697
1982	1.1910197736469883
1983	0.9614276516856868
1984	0.6794138425930749
1985	1.5304616580721175
1986	1.4445421088168284
1987	1.3094346174057627
1988	1.3516378898138268
1989	2.104233138653505
1990	1.966674411958828
1991	2.379478023618755
1992	3.472442088851001
1993	5.022840363596291
1994	2.6766264559900965
1995	2.8364422795252278
1996	5.333044903981317
1997	6.190213602587771
1998	7.32857774156501
1999	8.8028611479942
2000	7.687950067451756
2001	6.338630325312944
2002	5.38837566776633
2003	5.020871104835364
2004	2.8728971771252043
2005	6.89582049858817
2006	4.06222884203336
2007	3.861631856794153
2008	3.847839130698458
2009	3.737476715741509
2010	4.6291634292505925
2011	4.887154590994742
2012	5.616045254286721
2013	4.452251151863683
2014	5.499417965748779
2015	5.023352872910166
2016	6.258169492811221
2017	7.193967718561891
2018	6.531517154467183
2019	5.092246468869965
2020	5.092246475245486