Year	% of total merchandise exports
1960	0.036603221083455345
1961	0.12342908438061041
1962	0.05351594400519747
1963	0.10660852948192252
1964	0.06373051990867906
1965	0.05428584259770588
1966	0.1428794850159967
1967	0.27618302104548814
1968	0.30565604270367264
1969	0.4341450407551665
1970	0.35563255769643753
1971	0.7993819792578447
1972	1.2560759292529176
1973	1.2237634688534444
1974	0.953784483527983
1975	1.0049941873309165
1976	0.05193091485671111
1977	0.1701553104616071
1978	0.09423299587602171
1979	0.21211600234414416
1980	0.155914171809427
1981	0.2851606449353506
1982	0.33683067813061934
1983	0.34173988810899214
1984	0.13597392657948906
1985	0.1248747028137906
1986	0.10125778753693696
1987	0.4233512011714653
1988	0.8832158595844252
1989	0.6297750766231913
1990	0.4392289814193348
1991	0.5936599306445084
1992	0.6193060333975827
1993	1.199179169851579
1994	0.908908161158893
1995	2.3505859260578124
1996	2.538930985094591
1997	1.5705520925238419
1998	1.755617395165617
1999	1.698710747672468
2000	1.2503268020063287
2001	0.8701260692120648
2002	0.3527360571242355
2003	0.4521203277818796
2004	0.4329674463224289
2005	0.5258805605306986
2006	0.521182452203887
2007	0.5973013585932937
2008	0.33551384769995973
2009	0.4031577625064404
2010	0.5426500588435279
2011	0.7152088531832093
2012	0.4138966921840801
2013	0.354363343428166
2014	0.31831963595426593
2015	0.2960652224207191
2016	0.2502840867790305
2017	0.18796417629631246
2018	0.30514901662257826
2019	0.2698000567357843
2020	0.16164016132165568