Year	% of total merchandise exports
1960	1.775137839403469
1961	1.9368282696988852
1962	1.9891491547956954
1963	1.9660166387807438
1964	3.6969090090193926
1965	3.9738131369145946
1966	3.0854229285589354
1967	2.716802388137287
1968	3.1311444412050027
1969	2.897882524004279
1970	3.058674539905537
1971	3.0226167934207604
1972	3.20338572319699
1973	2.918179500555139
1974	2.688173696100431
1975	2.2810977367119496
1976	1.7821536990132552
1977	1.973330061776828
1978	1.9571378386801248
1979	1.7243200745287748
1980	1.7944438020188433
1981	2.445425666593006
1982	2.239857534452382
1983	1.9642313901354482
1984	2.0303717504544734
1985	2.012103044741113
1986	1.835908593432987
1987	1.9171508998328166
1988	1.9987971712401742
1989	1.5990571251166714
1990	1.8092427724299531
1991	1.6689283175044496
1992	1.7856635373913756
1993	1.6577144169486968
1994	1.587990436045653
1995	1.78400210626645
1996	1.755319061583618
1997	1.7801074617267771
1998	1.8753846216657166
1999	1.7412797516326577
2000	2.136087090556981
2001	2.230918951226557
2002	2.3563246126007806
2003	2.318179573701023
2004	2.392334234440053
2005	2.4227626136767872
2006	2.4376959796971747
2007	2.6112597006776523
2008	2.702391382991597
2009	3.1652540054873883
2010	3.178511773590172
2011	3.4309823919105034
2012	3.44695159478213
2013	3.5510425285934413
2014	3.7238467283434153
2015	3.7562391576920207
2016	3.477513435772045
2017	3.2540188265655168
2018	3.139854836445914
2019	3.3466320525160556
2020	3.364404169832301