Year	% of total merchandise exports
1960	2.2549810631209017
1961	2.370999224961259
1962	1.9631600487169953
1963	1.993448645569693
1964	2.424891742116895
1965	2.2912269507243552
1966	2.132675449907264
1967	1.876475578377047
1968	1.64939262508794
1969	1.7469812116294539
1970	1.642079463466433
1971	2.004518134994744
1972	1.9839238208246857
1973	1.9542072032273317
1974	1.6499188978074575
1975	1.6465648250200229
1976	1.5395757199114612
1977	1.8030038734537464
1978	2.1640046382156997
1979	2.1559084473607824
1980	2.2318677166977814
1981	2.000234171728042
1982	2.0444995087442344
1983	2.123623103722804
1984	1.9714980558063842
1985	2.4263018025662513
1986	2.58015041912948
1987	2.6178660114632555
1988	3.202644969929321
1989	3.242749927846827
1990	3.0451407740586
1991	3.1326598228487055
1992	3.877522827649707
1993	4.554542085933728
1994	4.558992911511883
1995	5.0631890159568895
1996	5.225461110751411
1997	5.354413365507484
1998	4.574537435263534
1999	4.943787290436412
2000	5.728763648528027
2001	6.020518980688826
2002	6.725045500098189
2003	7.445834232427362
2004	7.6231355344055345
2005	7.859603947347338
2006	7.754258480464839
2007	8.374855123384028
2008	8.53982598694622
2009	9.868156726633268
2010	10.627989274615942
2011	11.37704435180953
2012	11.897822055183672
2013	12.592107386279924
2014	12.480602858565593
2015	12.424643549576718
2016	12.766961768460106
2017	13.809617562933827
2018	14.670525298364486
2019	15.242721682440742
2020	15.704701059274683