Year	% of total merchandise exports
1960	5.427405960893729
1961	4.680929338036967
1962	4.772315125710696
1963	4.079782813679081
1964	3.5567420350820425
1965	3.5087872507768223
1966	3.278748734442858
1967	3.1123769077291152
1968	2.7292898871700055
1969	2.628011251370196
1970	2.522538041135968
1971	3.187615334371028
1972	3.3947472356881767
1973	3.555390156243447
1974	4.039075688869614
1975	4.821153963956725
1976	3.752410745339744
1977	3.788931290933416
1978	4.276929178325922
1979	3.7824799266620497
1980	4.716917159251753
1981	6.019663906641336
1982	6.232479966833434
1983	4.8771184688388995
1984	4.671703160830264
1985	4.065685159900226
1986	3.6755716750936402
1987	3.3285792338393843
1988	3.8428644599106594
1989	5.102292003367064
1990	6.356894322073665
1991	6.341106155989183
1992	6.40031436435151
1993	6.932546916121647
1994	7.4636643917037855
1995	6.557392448487557
1996	4.469158769822479
1997	4.7309807978056515
1998	6.092564526059142
1999	4.921551718083075
2000	8.60112526962833
2001	8.523329804962112
2002	10.875935318012093
2003	9.571189105477881
2004	10.606696710767686
2005	5.640027511736164
2006	7.9086692493634105
2007	15.982744629405413
2008	20.803722511550703
2009	18.605976596334084
2010	15.44725547849721
2011	7.094549647436123
2012	7.362223120659806
2013	6.999994873444824
2014	6.486749623588121
2015	5.529723822963032
2016	6.913932560362773
2017	6.336451148137398
2018	5.473879369541467
2019	7.825254871566373
2020	8.974783269256239