Year	% of total merchandise exports
1960	5.572971090212469
1961	4.354136429608127
1962	5.58126084441874
1963	4.393249397267613
1964	3.45679012345679
1965	3.6336485813837727
1966	4.451657778808253
1967	4.256787850897377
1968	5.480052608505042
1969	7.122660853424273
1970	8.027445697928945
1971	11.116725618999496
1972	11.441353328986452
1973	10.684585576825393
1974	7.971984960765057
1975	9.93552765524262
1976	9.760190424944938
1977	9.432782450809649
1978	10.240879769489228
1979	11.545273797666063
1980	12.219399107872867
1981	13.611883018807076
1982	17.50964657335859
1983	11.196407373786748
1984	10.410301073509668
1985	8.69665069976284
1986	6.958486176970564
1987	10.479846718555898
1988	11.441892488568586
1989	12.288938158477258
1990	12.156989309287795
1991	13.13849622876605
1992	16.37704054460535
1993	20.51692168580909
1994	20.5238904185941
1995	24.4569259409794
1996	29.166205035608357
1997	30.936437420220468
1998	33.15208041849536
1999	30.197411593845686
2000	27.76221909592239
2001	26.50998843319189
2002	24.10489803630603
2003	19.751333676463684
2004	13.442160468248526
2005	20.28106830803315
2006	16.374351643270053
2007	16.690906570383547
2008	21.202476330391555
2009	15.978573632295232
2010	20.696541789982188
2011	19.131876851077966
2012	18.421354523161284
2013	29.615539767896465
2014	25.481023967569772
2015	26.546826962909975
2016	19.209524152606683
2017	19.46323827587138
2018	14.978153127808541
2019	17.284909456108753
2020	29.170470828647353