Year	% of total merchandise exports
1960	1.6220600162206
1961	0.2991772625280479
1962	1.4895057549085984
1963	0.6116207951070336
1964	0.14698677119059284
1965	0.050505050505050504
1966	0.6808896958692692
1967	2.7061310782241015
1968	0.07459903021260723
1969	0.6683244784163309
1970	0.5094316896269128
1971	0.48553445554455354
1972	0.2124770182182851
1973	0.28414155959928433
1974	0.1624459462537378
1981	13.808859430834493
1982	8.102590822590885
1983	12.356110440165262
1984	6.400334727279181
1985	6.586908318607293
1986	7.38221922782828
1987	4.514438892542951
1988	8.39837439666733
1989	2.2586284991907357
1990	2.759068608525979
1991	4.82831620861868
1992	1.671487678373474
1993	6.762792462722356
1994	2.3904337130557622
1995	5.87927831118066
1996	8.038479071416509
1997	14.217553578737169
1998	5.873746243690727
1999	8.89811872322272
2000	18.471301560264376
2001	16.326658462337083
2002	18.182764110312025
2003	20.919361369025268
2004	26.145471664332092
2005	36.42462254287322
2006	42.02370485600439
2007	70.59619104233852
2008	66.0306599931345
2009	50.76901501282964
2010	54.12979950718517
2011	52.60471762127074
2012	62.350619222179446
2013	61.18592017407097
2014	59.62606964523641
2015	53.969912590410566
2016	62.5174544930173
2017	72.27119427238405
2018	73.09609415801994
2019	71.03217373854513
2020	72.43893707907927