Year	% of total merchandise exports
1970	1.9105497410976784
1971	1.3455543761508881
1972	1.2069294432335236
1973	1.2098842976234525
1974	1.5434057323064794
1975	2.443986703467485
1976	2.808468613048577
1977	2.342422552482332
1978	1.9734320344565923
1979	2.603758737947711
1980	3.4349258697500753
1981	4.003204915610923
1982	6.07005277338618
1983	4.850393809565747
1984	5.078279888704075
1985	4.56214958594977
1986	3.600241516885062
1987	3.057745692877113
1988	3.7324498156907366
1989	3.775868978864528
1990	3.2886862174477662
1991	2.0762772421455864
1992	2.7758127861097805
1993	2.2299213849502517
1994	1.7427608897977374
1995	1.5149972125081914
1996	1.5806537800725238
1997	1.5445890632896255
1998	1.1817772204421328
1999	1.2303977753498356
2000	1.0595250572458534
2001	1.1955854769753371
2002	1.088143213167869
2003	0.8472338288365994
2004	0.8378676615610438
2005	0.980482148157978
2006	1.0030152331914586
2007	0.9984733985201222
2008	1.5260501154504909
2009	1.2455564924003715
2010	0.9022281709187667
2011	0.9447385321684213
2012	1.1568228464358892
2013	1.413577333294315
2014	1.812417358169887
2015	1.6261702396496653
2016	1.5200059985182786
2017	1.2710475691659129
2018	1.249097158629586
2019	1.4649053811961965
2020	1.4442725915760037