Year	% of total merchandise exports
1960	62.55742725880551
1961	61.28458999746128
1962	61.86379928315412
1963	65.15778019586507
1964	55.12374718756392
1965	54.000381898033226
1966	58.00335570469799
1967	64.32758331937698
1968	68.35788325150027
1969	66.32459084563519
1970	64.84552036699276
1971	67.05109313445404
1972	74.15816364091464
1973	72.45035200168121
1974	60.25600803162452
1975	66.85471825559159
1976	70.48321499965535
1977	60.16531038302586
1978	69.96269157473765
1979	64.95588049304885
1980	60.86080124607738
1981	57.99888294901459
1982	66.30455149211161
1983	62.11965500643936
1984	67.65270270798403
1985	71.14394431825652
1986	76.34228386303444
1987	76.51335959352676
1988	77.7432567587646
1989	75.53857185023165
1990	77.75940184352505
1991	76.28385349601604
1992	77.25645961455972
1993	79.50707552546866
1994	80.50419622620673
1995	75.44961103682091
1996	78.00857885135956
1997	81.58482335746638
1998	80.05566289041042
1999	82.08273310945657
2000	81.6405554215682
2001	79.97816635501988
2002	80.66690361252867
2003	79.62631025618029
2004	77.30463229426906
2005	72.45375344007424
2006	72.75524367436729
2007	72.80593565153298
2008	66.69639759592145
2009	62.65493559456525
2010	61.104179568983206
2011	57.82169356830658
2012	57.74760900617295
2013	57.8628356313497
2014	60.30278252483916
2015	61.228387128709116
2016	63.96096140493884
2017	64.31238674027144
2018	63.66474945439001
2019	65.70522574247576
2020	68.86351723508609