Year	% of total merchandise exports
1960	3.9325845770406604
1961	3.491776902547397
1962	2.9742480889723986
1963	2.8504016981557583
1964	2.713505207499363
1965	2.692919639938871
1966	2.6086197509165228
1967	2.376443525010619
1968	2.405484053123991
1969	2.4265223963038323
1970	2.2824780359485763
1971	2.443488706329518
1972	2.4571047888298683
1973	2.601477500354915
1974	3.440489198518102
1975	5.057269580081969
1976	4.331053966112426
1977	4.425020558502353
1978	4.3665353556661595
1979	3.4871438234049217
1980	3.7854583558700376
1981	4.617192425910894
1982	4.509192496227079
1983	4.351960695718516
1984	3.7824407506286573
1985	3.312010090651053
1986	2.6845483554065033
1987	2.2229303322364835
1988	2.1196801210375598
1989	2.0105435837078267
1990	2.088849408233718
1991	2.047390775078326
1992	2.0191744735770145
1993	1.868338573244446
1994	1.5725706067399685
1995	1.4869082413265322
1996	1.4811472351714374
1997	1.482806839921087
1998	1.5286676112576763
1999	1.4230901138272518
2000	1.3888493952284553
2001	1.5670871312274928
2002	1.6301783860126609
2003	1.646307506970041
2004	1.7751827407406355
2005	1.7484009849808826
2006	1.6831120950562641
2007	1.874410527145772
2008	2.1845999023803726
2009	2.484909103102036
2010	2.351146213494541
2011	1.9727887165780233
2012	2.0987035840687263
2013	2.080922985715875
2014	2.1578417128144802
2015	2.037289139320014
2016	2.0514325433038025
2017	1.9734338005876089
2018	1.8530739508010323
2019	1.8011150427757667
2020	1.7015529125967006