Year	% of total merchandise exports
1960	0.28683940887644355
1961	0.2247855704901761
1962	0.20026192061741596
1963	0.28026372612055883
1964	0.3158024906327492
1965	0.39695841987759073
1966	0.3720547001323564
1967	0.41996067864200703
1968	0.47565406150320244
1969	0.3321248072447542
1970	0.4001367426153371
1971	0.6140093448308253
1972	0.6157390554150219
1973	1.1099710765755475
1974	1.9145437455614442
1975	2.354776844802981
1976	1.4193800820516194
1977	1.647571360998384
1978	1.3656287308140533
1979	1.386535049276279
1980	1.591856057462895
1981	1.8652468388594885
1982	2.0326854627845172
1983	2.2131470924819525
1984	2.0777707396192158
1985	2.1783230734074235
1986	2.052666354348977
1987	1.9000184900825636
1988	1.999460580391808
1989	1.4985219720134026
1990	1.345719784236191
1991	1.2671700305862108
1992	1.364490839933477
1993	1.2539762235589895
1994	1.0361210147245563
1995	1.0530887767389303
1996	1.1851739787276074
1997	1.2261561690044578
1998	1.1068017657321214
1999	0.9944884043385779
2000	0.8925361681159061
2001	1.1475969533193464
2002	1.3265617435441355
2003	1.3438220793765487
2004	1.483098200342672
2005	1.5175604436075092
2006	1.5365670777252913
2007	1.5364071413698293
2008	1.8723765834656871
2009	2.121673307979241
2010	2.1418079757636375
2011	2.265264473826922
2012	2.189970557773191
2013	2.2298532478214383
2014	2.2371407321511927
2015	2.2189012465491578
2016	2.338058843491039
2017	2.5311986759085836
2018	2.2505130257329182
2019	2.594800351029019
2020	2.5606238193072315