Year	% of total merchandise exports
1960	1.634628876104953
1961	0.5175760189777874
1962	1.2014116894775027
1963	0.7164711320464001
1964	0.7789113262517146
1965	0.7811219752007429
1966	0.8552670692452077
1967	0.8546325298140303
1968	0.7918785923996194
1969	0.9039450480336421
1970	0.983980450719522
1971	0.7979484050565332
1972	0.7744072805814012
1973	0.8404316036906497
1974	1.3822441430332921
1975	1.7419821250646148
1976	1.1823589502959564
1977	0.5217324422718649
1978	0.865833561358045
1979	1.3661974872661344
1980	1.888603185136032
1981	1.7317360920420282
1982	1.0929172285365698
1983	1.6485335246744854
1984	1.275737938278388
1985	1.2959923982232806
1986	1.528826302534656
1987	0.8073034632747439
1988	1.0785903986061953
1989	1.179442747891395
1990	1.2008820708766732
1991	1.2250627077584049
1992	2.097624093049458
1993	2.1320087487990844
1994	1.1283200207805701
1995	1.8769150612199328
1996	2.9864999215111716
1997	1.0254453533016956
1998	0.6147040676787855
1999	0.5896123859734069
2000	0.4981536671366811
2001	0.5240815977748097
2002	0.4615258937577863
2003	0.47950213294003774
2004	0.6763695464743776
2005	1.248281407413427
2006	0.9828259903928317
2007	1.2595367794825907
2008	0.9319943913295778
2009	0.8482369667348799
2010	0.6506944226655688
2011	0.7398402681896209
2012	0.5351144049179455
2013	0.6924689855596493
2014	0.6886480447522019
2015	0.48110853786046015
2016	0.49448444369261196
2017	0.5094896830452265
2018	0.44192514167898983
2019	0.4145746022651999
2020	0.3688368473855324