Year	% of total merchandise exports
1960	22.984097841215316
1961	18.11254313684062
1962	12.765898553733306
1963	12.123735271112457
1964	10.615267539724908
1965	9.967010099984774
1966	8.528963913047539
1967	8.113292103612082
1968	8.295034368809002
1969	7.165426087419263
1970	6.8315870405809624
1971	6.325882330013837
1972	5.713651107307117
1973	6.292231713754308
1974	8.195208766509904
1975	10.455017581307592
1976	8.895349763707866
1977	8.93900262009278
1978	7.99574404025301
1979	7.621954288406214
1980	8.240404428456676
1981	9.160590195145168
1982	8.564172259449135
1983	8.042400150619164
1984	7.263615895225975
1985	6.884893683846226
1986	5.25524523881192
1987	4.279204354878619
1988	3.825364704461023
1989	4.30473217263568
1990	4.685379346566959
1991	4.2780184582466125
1992	3.831170163786114
1993	4.173951654572404
1994	3.9863559808256213
1995	3.7706406122345717
1996	3.7673273993964522
1997	3.7547892283729998
1998	3.820628929435668
1999	3.8732506013456556
2000	3.663227194982722
2001	4.005260539405225
2002	4.171574737582104
2003	4.214437447065633
2004	4.343354609342154
2005	5.018873090911447
2006	3.9507953515862178
2007	3.8588586003701004
2008	4.418324401376797
2009	5.063676968702727
2010	5.060072756386997
2011	4.829009710748652
2012	4.522118637751642
2013	4.3135515795095305
2014	4.217572704646779
2015	4.425155535254334
2016	3.9996399936948674
2017	3.936150039604108
2018	3.7234423412375346
2019	3.5742661318854543
2020	3.412035713144898