Year	% of total merchandise exports
1960	85.37321758232903
1961	85.55852162698577
1962	84.80287044910803
1963	84.69590566225271
1964	81.95136152979768
1965	80.21257596905966
1966	79.88460870618958
1967	81.33411699443953
1968	79.20330568819827
1969	79.64408766051041
1970	79.5240608230222
1971	78.8292884467408
1972	79.67107751225917
1973	75.8832006136424
1974	73.94516118242443
1975	69.79090313556772
1976	73.49388281268445
1977	74.09277655273723
1978	74.66628480882534
1979	73.82282440530997
1980	72.43863085476025
1981	69.23985307834144
1982	72.86038576217238
1983	74.62033281886134
1984	74.9126713149426
1985	74.44255775807565
1986	76.5746886208794
1987	77.06858937443357
1988	74.93591996767731
1989	76.82202688641568
1990	77.29456990382853
1991	79.63698338636095
1992	76.75217093144484
1993	77.43176670405221
1994	75.57166864241391
1995	75.24170280052628
1996	75.38538302122019
1997	76.06895884477453
1998	77.13646263491708
1999	81.16811934496693
2000	81.74845753021009
2001	80.49005842812711
2002	81.4013847702403
2003	79.90858894473448
2004	77.9292329691527
2005	76.3619044970106
2006	75.48605750775201
2007	73.48350382388305
2008	70.69097197478676
2009	70.00541473497479
2010	69.00083168070032
2011	68.41167792038681
2012	68.62842115906365
2013	68.36718504063563
2014	69.88360873852933
2015	71.53329438146217
2016	71.66888603077282
2017	70.06947632617852
2018	69.88044281135653
2019	71.08871535800155
2020	70.05571068251973