Year	% of total merchandise exports
1961	18
1962	1.1494252873563218
1963	1.2254901960784315
1964	1.1363636363636365
1965	1.3333333333333335
1966	3.0303030303030303
1967	1.7347034976902047
1968	1.639344262295082
1970	2.452316076294278
1971	3.5851886030684046
1972	5.276196853029796
1973	7.466143644344821
1974	11.428976065713071
1975	6.3472086557968295
1976	7.9813783279869375
1977	5.2801577230827315
1978	7.744037714919578
1979	4.364939763034748
1980	5.151621261993137
1981	14.71087028457975
1982	6.5213162460997385
1983	5.968846264170709
1984	8.17017714589437
1985	12.943312650710398
1986	8.244094891632937
1987	13.36167353636634
1988	14.547763347763349
1989	17.92095873661261
1990	13.91815742100653
1991	18.9009862318133
1992	19.988966575129755
1993	27.945979805813653
1994	28.083956506919726
1995	23.756398499779618
1996	25.672188966094378
1997	24.593261782221944
1998	27.53185295690891
1999	27.1567509569884
2000	52.56271613469773
2001	28.197572803595573
2002	27.696978428982906
2003	32.922024687802995
2004	31.87582549508359
2005	33.56321909560822
2006	27.76006262559439
2007	29.88606895667599
2008	28.40121132450561
2009	31.98961082447365
2010	31.176782098547058
2011	28.545922199476763
2012	23.37850324695169
2013	33.91625422771371
2014	33.89255840393211
2015	29.962979758311132
2016	31.261502877270537
2017	24.39868449130921
2018	25.891183166759745
2019	31.31028022475989
2020	34.77562714318206