Year	% of total merchandise exports
1964	2.960047908289845
1965	2.3552651572709316
1966	2.3952095808383236
1967	1.6430260047281324
1968	1.5597235932872655
1969	0.8605115527241608
1970	1.5521628498727735
1971	1.5254675514953029
1972	1.9297399236875574
1973	1.7528687413679607
1974	1.9169952883335042
1975	2.0644607769209373
1976	1.7125981216168282
1977	1.359258116057811
1978	1.5197150435129825
1979	1.4289392159503784
1980	1.1580010194879033
1981	1.5861563460383623
1982	3.3740652686738586
1983	7.821909982512832
1984	8.436098281224599
1985	7.501928703474578
1986	3.0365335262234816
1987	3.7222558630592912
1988	4.4233966881874895
1989	3.729362819346904
1990	3.718320427799059
1991	3.4437879333688075
1992	4.068970237356625
1993	4.470738946873054
1994	4.327977984658915
1995	4.535721683690793
1996	4.729776511796997
1997	5.42156920628873
1998	5.635700522462575
1999	6.971680360302019
2000	12.049849445475951
2001	12.051239260886621
2002	12.043587433065596
2003	12.061724267116396
2004	12.034563276612772
2005	12.037702960781491
2006	12.03464900109632
2007	12.032384741713216
2008	12.032564174171307
2009	12.0321530734458
2010	12.032155118906104
2011	12.031757358479869
2012	12.006962288024017
2013	12.006954292893687
2014	12.006905166250805
2015	12.006904188265498
2016	12.00694208155524
2017	10.535177576238882
2018	10.464352411582095
2019	11.96249470987985
2020	10.93576195527873