Year	% of total merchandise exports
1960	4.503531879453407
1961	3.395894605985264
1962	2.578534394321679
1963	2.609956500724988
1964	1.9809671780928337
1965	1.8241834607366225
1966	1.7717478052673583
1967	1.4172998246639392
1968	1.5788028555738602
1969	1.0941052042937551
1970	1.288917414589493
1971	1.1202259799558876
1972	0.9911303550190064
1973	0.7493905066294335
1974	0.8893597752641043
1975	2.0325203252032518
1976	2.6159531161105374
1977	3.0234323399808756
1978	1.5787819643388799
1979	2.5418856295206007
1980	2.7212292985112616
1981	3.970074908427975
1982	3.8307446793215987
1983	4.521356319374397
1984	3.85078959256447
1985	2.246685585261068
1986	1.8491127324856333
1987	1.2000650234435013
1988	1.0069620765534042
1989	0.8890304099911471
1990	0.9916246273130855
1991	0.9114157485139268
1992	1.0354349245476386
1993	1.2937892844373928
1994	1.6220640744772234
1995	1.3123587035547435
1996	1.3135362248900708
1997	1.020895119721573
1998	1.0504657825702641
1999	1.0131596004399952
2000	1.1577548358109016
2001	1.387984256203115
2002	1.2969698636070532
2003	1.3702952522392537
2004	1.5786675143866082
2005	1.6193275374161678
2006	1.429194191795723
2007	1.5423525548304555
2008	2.2175201731402945
2009	2.6970214212197403
2010	2.8506371391492316
2011	2.9953132366059365
2012	3.4231772532628706
2013	4.262641466489605
2014	3.7937556683046174
2015	4.02237415500345
2016	4.032501208794703
2017	3.5920019476803873
2018	3.1504522316231505
2019	2.9750107293375563
2020	2.8388040168574444