Year	% of total merchandise exports
1960	7.645856097899364
1961	6.21939386013058
1962	4.964455629128146
1963	4.852729846246935
1964	4.2733225512844095
1965	4.248673224342594
1966	3.949212027066875
1967	3.675931106263712
1968	3.711825932967928
1969	3.6076471203603395
1970	3.3311830756942475
1971	3.2623653009472555
1972	3.338738387157653
1973	3.5483863073199293
1974	4.895627759846198
1975	6.727222122952389
1976	6.766229191841923
1977	7.328909196917478
1978	7.049779485710046
1979	7.363651501704066
1980	7.822637293804474
1981	9.736106637498171
1982	9.70812246545482
1983	8.662660553484082
1984	7.727015281101217
1985	6.4108531818878
1986	4.658905820378523
1987	3.779819465782425
1988	3.5634393554669916
1989	3.5651660230271185
1990	3.375847386841572
1991	3.3604502235497704
1992	3.437081802956988
1993	3.7936680705989336
1994	3.4547426206571736
1995	3.1549971431343153
1996	3.0697674760879075
1997	2.9103626029103555
1998	2.9921140577407157
1999	2.9254400297848426
2000	2.759034935632588
2001	3.0025542305353334
2002	3.0473443531523454
2003	2.975280621881617
2004	3.0289983221264993
2005	3.222543806085269
2006	3.1171191318184475
2007	3.2914002673418876
2008	3.6752051915424038
2009	4.0709024475549365
2010	3.9423462624657533
2011	3.6235920107323674
2012	4.058131058431694
2013	4.271084948420685
2014	4.253002573047769
2015	4.3905086105354645
2016	4.1142183837889865
2017	3.795263082805711
2018	3.5134576358925007
2019	3.4942829746164006
2020	3.2744148570110037