Year	% of total merchandise exports
1960	0.34715131713293856
1961	0.19661816751867872
1962	0.018800526414739612
1963	0.01846381093057607
1966	0.011357183418512209
1972	0.028055737398297954
1973	0.023568421565918436
1974	0.041555716936980555
1975	1.218711802356738
1976	0.024343931057987246
1977	0.9794819422523443
1978	1.0428208303460862
1979	1.2957480363738672
1980	2.0783543871628543
1981	2.229251012145749
1982	1.6601194640262606
1983	1.7704130443825132
1984	2.237215909090909
1985	2.0610353943687274
1986	1.8567952564314565
1987	1.583047797706782
1988	1.3597875505749204
1989	1.1109633587601697
1990	1.1178077140256057
1991	1.0305074284706608
1992	1.3579576638002107
1993	1.1146131346636374
1994	0.8806949352199169
1995	0.819003294146091
1996	0.8691396806512396
1997	0.7137867244559345
1998	0.8216695503045305
1999	0.7126520924911113
2000	1.1825846670816087
2001	0.5947854412304449
2002	1.2365259145424417
2003	0.721652778843321
2004	0.5096333058153538
2005	0.5066731495191081
2006	0.36710972055015856
2007	0.43913736335233855
2008	0.4939183481223669
2009	0.40172358794608704
2010	0.4456780063878657
2011	0.5196147711212444
2012	0.5947598932742965
2013	0.7262235860260621
2014	0.6203211847733104
2015	0.726419833940157
2016	0.6659624059761924
2017	0.5792639429099741
2018	0.6061675050627671
2019	0.6681309480150501
2020	0.6633008372337531