Year	% of total merchandise exports
1960	2.583586898388005
1961	2.9024408207445203
1962	2.46938912650286
1963	2.3638410256728744
1964	2.8078917591577532
1965	2.622717792618301
1966	2.415551778471879
1967	2.0640000740927062
1968	1.796848598185101
1969	1.920037161728985
1970	1.8272713663782445
1971	2.002536722647407
1972	2.1153868524021937
1973	2.2066251798390324
1974	1.7561177595368422
1975	1.739272064117588
1976	1.607850052600944
1977	1.9736724453249723
1978	2.2582827450599643
1979	2.1570442584941283
1980	2.3224036301722655
1981	2.294330824456824
1982	2.3291403420501133
1983	2.3749992337171624
1984	2.1129501601959486
1985	2.50080158875158
1986	2.613180747585415
1987	2.73765572160956
1988	3.383647046606655
1989	3.4546866856639493
1990	3.3407106786931653
1991	3.4107843851812167
1992	4.0717429248507475
1993	4.779150211156033
1994	4.8155797546234025
1995	5.371756030765338
1996	5.562877471416893
1997	5.676678787547619
1998	4.869030812958582
1999	5.241184104865032
2000	6.057557382648225
2001	6.368974627967451
2002	7.11116057561927
2003	7.852483614003476
2004	8.051312771363769
2005	8.303882267035094
2006	8.214032659064504
2007	8.718932940955538
2008	8.957953688052262
2009	10.182703437590574
2010	10.901291313689336
2011	11.668540438061319
2012	12.159897965354215
2013	12.93838107591489
2014	12.893571960509712
2015	12.826325625631622
2016	13.202557016970093
2017	14.319969102146112
2018	15.175839320503535
2019	15.794289296373817
2020	16.23883730051314