Year	% of total merchandise exports
1960	1.6831320892791803
1961	1.4871228678939186
1962	0.9880279825991805
1963	1.4581424447531501
1964	0.7746607928676658
1965	1.3045690765793823
1966	0.9047416392874417
1967	0.9379709946780237
1968	0.9355822442880376
1969	1.018715781225848
1970	1.5383383911473778
1971	2.445810524315521
1972	2.045861142762951
1973	2.229453827051543
1974	1.2165335673947841
1975	1.41163749061414
1976	1.3792972119131455
1977	1.3353168963581432
1978	1.2752177036821764
1979	1.2522047126281235
1980	0.8090734045656013
1981	1.1547941337604946
1982	0.9744893928244452
1983	1.0032181846457195
1984	1.1505701093303506
1985	1.1440423151764527
1986	0.9245304181517059
1987	1.271241249842205
1988	1.3456829211324415
1989	1.136964679945557
1990	1.3081672104392157
1991	1.1537055616829055
1992	1.227674055586708
1993	2.9914647988160645
1994	3.424707664097362
1995	4.161400397774531
1996	4.350467240543142
1997	5.293257544480228
1998	2.021034041231144
1999	3.584732848501865
2000	8.59794418979137
2001	7.4685569497998525
2002	8.148517952564264
2003	10.499587040782547
2004	11.21314641556454
2005	13.931852173967691
2006	12.803449190513746
2007	20.509872850322495
2008	21.987783287775592
2009	18.882895359985216
2010	18.206949874621557
2011	18.909117968306628
2012	22.853803614297515
2013	23.283154064465062
2014	21.5582746800973
2015	17.49343335076184
2016	18.19053954674134
2017	20.44569025459233
2018	22.884382324926506
2019	20.99268970259576
2020	18.768135330183288