Year	% of total merchandise exports
1961	4.469987228607918
1978	5.877598391743176
1979	6.161361254999188
1980	6.352540354591161
1981	5.025240295059981
1982	4.381354885629211
1983	4.033331221088651
1984	4.114544934472659
1985	3.772998053307182
1986	3.111520596289767
1987	3.4747351882823985
1988	3.876835921107847
1989	3.655795370941305
1990	4.050322098164201
1991	4.176693976156376
1992	3.909488090652173
1993	4.150282688448186
1994	4.2156134167328565
1995	5.052539994763589
1996	4.727349285208682
1997	4.919587476697846
1998	4.125193062275169
1999	4.2157969795214845
2000	4.883670919374248
2001	5.0630093021337546
2002	5.298503151179889
2003	5.224871379703535
2004	5.272504399247365
2005	5.281116557205419
2006	5.15512716390186
2007	5.49232290221131
2008	5.962601006389664
2009	6.644288091177572
2010	6.964840775829299
2011	7.405701994545301
2012	8.282854426439815
2013	9.2274278821257
2014	9.743067238415513
2015	10.111438330877775
2016	10.439646492775871
2017	10.75584928844914
2018	11.108494793969609
2019	12.532161211902903
2020	12.859738768754667