Year	% of total merchandise exports
1960	2.4
1963	0.5102040816326531
1964	0.4716981132075472
1965	3.1746031746031744
1966	0.5747126436781609
1967	0.7874015748031495
1968	0.06930967563071805
1969	0.40211727052644536
1970	0.3095290736237011
1971	0.09372071227741331
1972	0.18649137708187158
1973	0.8565653973244362
1974	0.6201873838334029
1975	0.2487753022017162
1976	0.20811187135991374
1977	1.0650084652923015
1978	5.909937734205101
1979	3.5304021700882378
1980	6.333350396904551
1981	16.540752641394846
1982	0.08943628041435799
1983	0.17598270953150458
1984	0.6724307751206842
1985	3.378122602604494
1986	0.07569884627663152
1987	0.13743434579830877
1988	0.48987095804330516
1989	0.5713550380069612
1990	0.531589960913341
1991	1.5674061215628545
1992	1.062242977675052
1993	0.5356657444442828
1994	0.2358219257095827
1995	0.4427169935669285
1996	1.315836362229388
1997	0.2717851381989462
1998	0.3445412010524358
1999	0.25904616470386777
2000	0.5963707894672117
2001	0.3276422608501392
2002	0.550564126257239
2003	0.5747882076239126
2004	0.48963897048185606
2005	0.7006866286248801
2006	0.5647891713756777
2007	0.16831680934338406
2008	0.14122448470230545
2009	0.24979685521138642
2010	2.111879079486009
2011	0.3647455608886343
2012	0.7600696379547096
2013	0.2650418590497439
2014	0.5685557395057272
2015	0.7510720405174347
2016	0.7228539839143662
2017	0.27084970163806066
2018	0.5275064102880905
2019	0.7285421138429903
2020	0.4786079263842241