Year	% of total merchandise exports
1960	1.8661655346901704
1961	2.13751507840772
1962	1.784731859468774
1963	1.703361906214677
1964	1.8934501589912531
1965	1.9960778887581774
1966	1.9831559368719405
1967	1.9303717725984
1968	1.9144040260340949
1969	1.8832386645216619
1970	1.7240087957508003
1971	2.0812292482395973
1972	2.1927822202799008
1973	2.2654972721940587
1974	3.574064640261649
1975	5.463029241226349
1976	5.822668882518709
1977	6.5364552577096005
1978	6.352386516379102
1979	6.493661578391584
1980	6.842264651005654
1981	7.917639630419522
1982	8.318951609912425
1983	7.4815863630998845
1984	6.013862773291372
1985	5.120285532777611
1986	3.932320135863812
1987	3.4223790279568527
1988	3.059865202899733
1989	2.6128862659846157
1990	2.5816766728072067
1991	2.7442982581898945
1992	2.916233779921899
1993	2.7496397380723767
1994	2.32261967931763
1995	2.1241988968941095
1996	2.199823243299453
1997	2.239597772804793
1998	2.7110052256066433
1999	2.3426665281510393
2000	2.1286523717683314
2001	2.512538955811219
2002	2.606665959249955
2003	2.5450953008722323
2004	2.5429099438696046
2005	2.6675193858365223
2006	2.8158441103181113
2007	3.278614914439701
2008	3.873696242189595
2009	3.8478795061872644
2010	3.4307391022476286
2011	3.3352670367762562
2012	3.7539213721512343
2013	3.8553953491904047
2014	4.144288837979112
2015	4.231767113844582
2016	3.9157245886508867
2017	3.3674743247743577
2018	3.2279924699357574
2019	3.5276652027690663
2020	3.3978618347678466