Year	% of total merchandise exports
1960	5.418190819329465
1961	4.729309271935283
1962	4.856327388999764
1963	5.53350269926961
1964	4.697418535759628
1965	5.115804481221084
1966	4.9374563939001295
1967	4.809517782559169
1968	5.026303863811006
1969	4.7277314218991044
1970	4.082221311350974
1971	4.346497289252684
1972	5.0113047091263265
1973	5.511310912710925
1974	7.951277168559984
1975	10.218346884247422
1976	9.917728301947609
1977	11.302203164537397
1978	11.151862361906801
1979	11.912764695776506
1980	13.686291032266626
1981	17.79936307425661
1982	15.209233204337632
1983	14.762772366606761
1984	12.748488352567106
1985	10.485391647702592
1986	7.284759404787966
1987	5.705043274773302
1988	5.377005764137716
1989	5.428915948517597
1990	4.849205593594479
1991	5.114587105104732
1992	5.3975800430778476
1993	5.8352841690268376
1994	5.217115282106029
1995	4.585050151913079
1996	4.700594299622274
1997	4.658329313352668
1998	4.822959797748457
1999	4.597555661428778
2000	4.5977172031312525
2001	4.9754677089048105
2002	4.980938893997265
2003	4.8937861476076785
2004	4.956384681547939
2005	5.176046202468817
2006	5.501637653724747
2007	6.284624763014701
2008	7.446542287219882
2009	7.818596161258131
2010	7.481620559415522
2011	6.553371210575387
2012	7.365888347230364
2013	7.927860794577233
2014	7.464252904980587
2015	7.312518100216854
2016	6.7061837452922335
2017	6.171232975180226
2018	5.578703808736984
2019	5.29514984462087
2020	5.032044278198823