Year	% of total merchandise exports
1960	2.164537246143107
1961	1.6636847994907173
1962	1.7998510684491071
1963	1.6646554825059925
1964	2.2936713907597737
1965	2.1143460375446472
1966	1.9716534715208727
1967	1.6598218297349598
1968	1.6806652496812993
1969	1.0472798595607138
1970	0.8816123415182978
1971	0.9090011931828167
1972	1.2857422288059968
1973	1.1902258858946044
1974	0.8022931788052905
1975	0.8442800246613823
1976	0.6783902409697204
1977	0.9780504449289773
1978	1.0942261090475034
1979	0.9885068852987513
1980	1.026261598786185
1981	1.9622377478133495
1982	1.672441863516982
1983	1.6688876027451522
1984	1.7931776570625466
1985	1.6905334058997905
1986	1.6040715640979135
1987	1.5392181385176873
1988	1.680098998172095
1989	1.4158555487562654
1990	1.4970177358341277
1991	1.411088632644667
1992	1.438674999587909
1993	1.4254787893056695
1994	1.504779556810621
1995	1.6429409530557877
1996	1.5727320214977822
1997	1.5893735607534825
1998	1.7458146912248458
1999	1.9877567592447514
2000	1.88479320715283
2001	1.7357231230201042
2002	1.9491182157753786
2003	2.09371964164401
2004	2.1420930078138736
2005	2.3919947519896465
2006	2.7500182947317002
2007	3.2503863088746616
2008	3.6365307970462037
2009	3.8473537076980646
2010	3.932695018217568
2011	4.077017198989332
2012	4.102795171627791
2013	3.9692356852682735
2014	4.276411673307911
2015	4.409153941406325
2016	4.555221088997802
2017	4.822795444154398
2018	5.026758788431831
2019	4.697372034253085
2020	4.088284182727481