Year	% of total merchandise exports
1960	67.90945688607361
1961	69.44383007813708
1962	71.95682700616736
1963	72.61018351128492
1964	72.89320026708353
1965	73.08533696824175
1966	73.2107344977181
1967	73.24156760354624
1968	73.26060820165311
1969	73.5486926179619
1970	72.89530481202937
1971	73.05019997647238
1972	73.7249848125536
1973	73.81855933427619
1974	71.88024962372464
1975	68.39927268163734
1976	70.24529876424295
1977	70.17587698245207
1978	70.59805480604057
1979	72.81679009173536
1980	71.7535786494391
1981	70.3787650017959
1982	72.02806089028245
1983	73.49781649882134
1984	75.01943358204372
1985	75.70640396435984
1986	77.3914317612096
1987	79.10603351181027
1988	79.43560949473904
1989	80.00618467250314
1990	80.44614446118464
1991	81.03854387751306
1992	80.74226031264935
1993	80.08150910472057
1994	80.05281462311477
1995	79.95759756784292
1996	79.79477283231012
1997	80.4179628821351
1998	81.9571984421426
1999	88.0522766449781
2000	87.36565204583434
2001	87.20317595091731
2002	86.86212536738232
2003	86.46479249419178
2004	85.763240249252
2005	84.7279146498614
2006	84.10648339565688
2007	82.94462094861446
2008	81.67392204755566
2009	81.16474822376799
2010	80.31199765177476
2011	79.00366277805239
2012	78.12480307318833
2013	78.2840489501487
2014	79.2257080852219
2015	80.48554096868659
2016	80.96037103286855
2017	80.07728647972779
2018	80.18740822130152
2019	80.13713013290575
2020	80.49184924033128