Year	% of total merchandise exports
1960	0.32623626373626374
1974	0.2909130089294132
1975	0.032384787598034384
1976	0.18370307965927174
1977	0.10787088684620562
1978	0.21644278008726425
1979	0.10976666559681612
1980	0.17065235742086796
1981	0.026459137432119716
1982	0.06397094019388115
1983	0.01698481746039235
1984	0.042472735244149726
1985	0.2053520551332638
1986	0.19379321521175455
1987	0.12981947524988793
1988	0.4030239698635085
1989	0.26673845164902177
1990	0.21423052100680942
1991	0.42640859649553214
1992	0.4662820593336409
1993	0.41617020572418845
1994	0.3686932412237043
1995	0.5447400997491519
1996	0.6793845374121998
1997	0.8400388416941005
1998	1.1424387536151857
1999	1.4621411887839355
2000	1.1816572014856577
2001	1.374923575137668
2002	1.4171835701969253
2003	1.415740572903676
2004	1.2666101037536248
2005	1.1731160611588307
2006	1.1026945112020339
2007	1.2601846224039448
2008	1.2602018588338448
2009	1.2893743585557407
2010	1.423373521824831
2011	1.757506729828941
2012	2.019171703186832
2013	2.006183041544327
2014	2.338820891475507
2015	1.8834577513581086
2016	1.80944753372404
2017	1.7586441863360665
2018	1.6626954312766802
2019	1.7805460020360413
2020	1.8108381291235258