Year	% of total merchandise exports
1960	69.20399353574184
1961	69.98343350960857
1962	71.5982385025111
1963	71.81964938491484
1964	71.65207583454746
1965	72.51019287902216
1966	72.66110024591327
1967	73.52279782638256
1968	73.98295257646087
1969	74.65327359898346
1970	74.6883376056556
1971	74.7204944915636
1972	75.49766745827586
1973	75.05795499851551
1974	72.28575505198506
1975	69.19510891947026
1976	71.87778823435671
1977	72.24796156274752
1978	72.30650592149382
1979	73.81295902185944
1980	72.07613838147398
1981	71.30899559511273
1982	72.80519495788435
1983	74.9959064332519
1984	76.31919319706087
1985	76.62984124724653
1986	78.54261440959066
1987	79.71697168638113
1988	79.59308901405228
1989	79.72869623770943
1990	79.65676324673375
1991	79.3644505573387
1992	78.65774572728611
1993	77.35439236265474
1994	77.41083350379743
1995	77.30767613192941
1996	76.79348033967347
1997	77.43816088614687
1998	79.00268480884041
1999	82.89004093336777
2000	81.75495977563973
2001	81.33349242510238
2002	81.00793013569006
2003	80.36806302174561
2004	79.40547145688308
2005	78.43775269164122
2006	77.61657765073977
2007	76.73488402919695
2008	75.42433836627951
2009	74.08705352575785
2010	72.10261175873799
2011	71.49897815557395
2012	70.41967266705704
2013	70.1782726395236
2014	70.74155815188551
2015	70.99618651046627
2016	71.70493855285312
2017	70.66020778847464
2018	70.83205043354185
2019	71.22297490679954
2020	71.36733061260993