Year	% of merchandise exports
1966	13.22319862841989
1967	12.607897618681015
1968	12.24843379311723
1969	12.619898505330463
1970	13.716215176020407
1971	12.129355233057176
1972	11.752738809396444
1973	11.204660435210775
1974	12.786128551063502
1975	14.503465492430628
1976	12.985004876934239
1977	10.398906475470808
1978	9.649910322495543
1979	9.186086975056377
1981	8.75444976666585
1983	7.164987355283835
1984	6.916137819824706
1986	7.054593608386336
1997	4.044136793749773
1998	3.746362260939195
1999	3.3014302867315637
2000	3.8915946432007855
2001	3.595714636488424
2002	3.9694295293746698
2003	3.767094722410361
2004	4.712298873693764
2005	5.985455692525707
2006	5.313503607350428
2007	5.4372653634887325
2008	5.3724418768556985
2009	4.641988521765502
2010	5.627677306739443
2011	5.048054613890557
2012	4.547285645739457
2013	3.881893499265365
2014	4.07331794090281
2015	3.897661394053278
2016	3.888443883027072
2017	4.418726531720208
2018	4.262210910221923
2019	4.550915159748047
2020	5.1560515364188
2021	5.369493924279785
2022	4.56117243971761