Year	% of total merchandise exports
1960	1.5417051294050925
1961	1.642307161613907
1962	1.482286460150247
1963	1.2683389601591595
1964	3.102592174129914
1965	3.413794224699249
1966	2.453089119098686
1967	2.1221274404874513
1968	2.3461246128597244
1969	1.7218280496549383
1970	1.9440963352011928
1971	2.1151911612568317
1972	1.5896798392569194
1973	1.3082961748007396
1974	1.3074036329994416
1975	1.2642608909690405
1976	0.8679308667163996
1977	0.8580021992430137
1978	0.9273261968886618
1979	1.0640498957782911
1980	1.0523036322166492
1981	1.3565549837495965
1982	1.3137441529909055
1983	1.242410631036893
1984	1.0964118987194416
1985	1.1981036586558538
1986	1.2784360926385692
1987	1.086098477828618
1988	1.1379199814650318
1989	1.168003685256997
1990	1.185532758103365
1991	1.1553240711755932
1992	1.5833763319720886
1993	1.450245018214827
1994	1.5449603013072761
1995	1.895027913796106
1996	1.7237917948390042
1997	1.844975144820571
1998	1.8173950476471654
1999	1.756757840468561
2000	2.1913909565524503
2001	2.1969268504518507
2002	2.3441932926875824
2003	2.4677095238145323
2004	2.668878097893671
2005	2.736029333633724
2006	2.783219965946768
2007	2.9620931283366163
2008	3.044749565795629
2009	3.4000763918755506
2010	3.707651883912566
2011	4.1506907678837734
2012	4.125136820525154
2013	4.265258500005384
2014	4.395571010361501
2015	4.249411799003937
2016	3.9554626166523903
2017	3.768496521427891
2018	3.6854274728798613
2019	3.904153798569063
2020	4.097826097048463