Year	% of merchandise exports
1964	99.83153633120936
1970	99.79407919455049
1971	99.66468314766604
1972	99.50908355800823
1973	99.52805984015201
1974	99.46335226205314
1975	99.7392724050431
1976	99.16434478865818
1977	99.08029989965854
1978	97.84980257660972
1979	97.70657164305365
1980	98.9317227710498
1995	59.703489753642124
1996	63.892915591069844
1997	68.06631393171271
1998	90.03986496873769
1999	84.50153165914467
2000	87.50065239777237
2001	92.20670958296758
2002	97.86456041260959
2003	85.94957616668508
2004	96.1881529078095
2005	96.73405135875407
2006	94.14471089380498
2007	93.85329007423547
2008	75.17372910414521
2009	81.28801091478381
2010	88.97575383449168
2011	83.21794223339485
2012	54.08912788023636
2013	91.91195550564603
2014	49.444102211344465
2015	82.46915269794664
2016	86.85588883646611
2017	73.39020979781299
2018	86.24272469799664
2019	44.06738193410041
2020	88.32158584758155
2021	41.822899188150956