Year	% of total merchandise exports
1964	85.82197095665668
1965	90.62911003945638
1966	92.56476933448907
1967	95.18062120189062
1968	94.20165175498968
1969	92.6222713456756
1970	99.80161879066814
1971	99.69266793502122
1972	98.6875656217189
1973	98.70240374388428
1974	100
1975	99.88153998025666
1976	98.54798364956379
1977	84.48289957759913
1978	87.2155936207915
1979	81.20158740264426
1980	75.83168344441036
1981	62.25723252851062
1982	62.08901713885974
1983	57.23447646161405
1984	56.217025954490616
1985	35.43768745575635
1986	34.064138252469036
1987	58.81478814608081
1988	68.17953965326207
1989	81.91955034164522
1990	97.90485584225277
1991	97.75488229433206
1992	91.56107271448626
1993	96.7810340465334
1994	89.89885892717987
1995	89.23799991296218
1996	90.91336370531519
1997	96.36277942408633
1998	90.41347714565352
1999	62.240952018831194
2000	83.46915732687475
2001	89.95778619460303
2002	77.71233905817718
2003	81.16276081529753
2004	55.79477165066978
2005	54.62920431461434
2006	48.435023208062766
2007	75.2951157455336
2008	34.02209034321451
2009	26.239379846505734
2010	34.91433418043939
2011	88.02732104421617
2012	20.25309528818739
2013	21.14562762721281
2014	54.892301611909225
2015	62.20077647061451
2016	60.93423186043704
2017	37.821940400500914
2018	52.414713571853575
2019	54.56575032432879
2020	79.3580606152238