Year	% of total merchandise exports
1960	46.49298597194389
1961	45.50561797752809
1962	35.31409168081494
1963	35.37803138373752
1964	30.31609195402299
1965	41.43884892086331
1966	31.28491620111732
1967	33.68319604860933
1968	18.74208056588273
1969	29.076498461237847
1970	33.71280632691421
1971	42.712712712712715
1972	35.24140203666642
1973	29.774362328319164
1974	24.156582086315336
1975	29.401274565175818
1976	43.16867802359783
1977	35.5904923404133
1978	27.069431853646215
1979	18.152247623645163
1980	19.47189600193296
1981	17.043896338759193
1982	57.71396479650943
1983	74.36959196445255
1984	63.51402968781237
1985	56.9907733269516
1986	48.23444887638376
1987	50.342093732939894
1988	50.86737133030942
1989	55.867382071257886
1990	60.958429535581416
1991	80.07347248073545
1992	85.16068391072648
1993	5.36831447985172
1994	34.564715825977466
1995	17.17456773682806
1996	39.37430269962058
1997	55.879927323555435
1998	54.98951105925186
1999	36.1767887888375
2000	5.527228814661514
2001	7.124343607047999
2002	7.049737925011333
2003	4.168069190254873
2004	5.131162025115285
2005	4.509994328285944
2006	4.9720550879245975
2007	5.237345221726407
2008	6.990112824981337
2009	8.180537127177201
2010	8.472976103509241
2011	7.104443180901704
2012	1.0747244369956956
2013	2.577745560035902
2014	4.231660089641746
2015	7.638432028891984
2016	4.280423418997769
2017	4.171367063999783
2018	4.154670458199153
2019	6.540635277785683
2020	6.707950742895946