Year	% of total merchandise exports
1960	3.5681562908266047
1961	2.948569186464905
1962	3.4170018774012934
1963	3.4189745103032703
1964	3.79846700118328
1965	4.139033337833932
1966	3.9818749155294273
1967	3.631498414319947
1968	4.0498142150641385
1969	4.585251189452657
1970	4.190142965002033
1971	4.211642313213745
1972	4.128201325011106
1973	4.326870357144587
1974	5.5379277612860145
1975	5.749059241572097
1976	5.336732819600814
1977	5.2917072879348614
1978	4.632447840283739
1979	4.9037841386586
1980	5.188810072925766
1981	5.827507786329193
1982	5.65466105501246
1983	4.756029347478375
1984	4.68010787551492
1985	4.415734665186249
1986	4.322749575841047
1987	3.9294821635769916
1988	3.947981127836732
1989	4.156922286933781
1990	4.054866503154256
1991	4.009635279997372
1992	4.161355207365302
1993	4.6268260942421495
1994	4.822243112928687
1995	4.712150344485617
1996	4.687622385973513
1997	5.012458732350509
1998	5.174105430549768
1999	4.163446622973041
2000	4.4138730264602986
2001	4.328067905850256
2002	3.909170413737458
2003	3.5885505248517022
2004	3.8441771261603344
2005	3.9256075007535944
2006	4.1175777332378605
2007	4.221510732718263
2008	4.529017964010536
2009	4.304829906934037
2010	4.713642981418711
2011	4.8680645510536795
2012	4.739400145336827
2013	4.742668169553665
2014	4.596514592591614
2015	4.541695725247398
2016	4.444854078393191
2017	4.580231263778562
2018	4.485631144272541
2019	4.4136855574075895
2020	4.218554209701781