Year	% of total merchandise exports
1960	5.249756034252542
1961	4.997807614498976
1962	4.749240177799875
1963	5.07875053140989
1964	5.3015869096755
1965	5.29028211128087
1966	4.64870991077284
1967	4.765559936928156
1968	4.373380916178498
1969	4.262462231645881
1970	4.292705236437372
1971	4.292187435104725
1972	3.652921949069088
1973	3.574238069189465
1974	3.7291485132327233
1975	4.262537556093768
1976	3.965888713874425
1977	4.19572526739007
1978	4.003406607679973
1979	3.2943895957170595
1980	3.9734585589916884
1981	4.187278286684543
1982	3.7700822585604525
1983	3.0088865839571537
1984	2.761845068508775
1985	2.5589790256734073
1986	2.24274625646608
1987	1.9917519935089172
1988	1.9797370947402155
1989	1.8335624360619875
1990	1.7100640122496937
1991	1.6590632293192853
1992	1.6133551744561163
1993	1.4851084629177602
1994	1.2951596092490458
1995	1.373468929172034
1996	1.34289837258893
1997	1.2467167660198244
1998	1.34573044494409
1999	1.1934244151784892
2000	1.161636080749435
2001	1.2117156567787875
2002	1.1767493020096818
2003	1.196650416520321
2004	1.1643631910502545
2005	1.1962924193301254
2006	1.352246965337612
2007	1.2571641558103288
2008	1.3386851681469012
2009	1.4515236186009535
2010	1.432266105343651
2011	1.5346913898290944
2012	1.504848240057651
2013	1.525512532735512
2014	1.5085664272063577
2015	1.4749090417418684
2016	1.3179809599090115
2017	1.2897525753937928
2018	1.2771709901345458
2019	1.2827925705893064
2020	1.2373369409973045