Year	% of total merchandise exports
1960	79.46760328658262
1961	79.7873572989943
1962	79.48508805388006
1963	79.2055361695432
1964	76.19027796704242
1965	75.26280074968338
1966	77.02915020230263
1967	78.94321308606558
1968	77.65090417874526
1969	78.01432099869898
1970	77.84038766083864
1971	77.97487063906384
1972	77.67286668703937
1973	77.75582137726487
1974	78.79691658368995
1975	76.77949278801826
1976	79.72505619645047
1977	79.2955987974429
1978	80.01695737352166
1979	81.1248460984168
1980	79.83079575057917
1981	75.20839509940673
1982	76.96919261821765
1983	77.47658979555099
1984	77.50517578364101
1985	77.56781508400898
1986	77.92779764062668
1987	78.11460172347057
1988	77.0058806865345
1989	78.80712980005391
1990	79.26175331522505
1991	81.36610870139684
1992	78.81071661752428
1993	79.09696369027999
1994	77.15862545350231
1995	75.2808857073891
1996	75.19816392550025
1997	76.59569236970499
1998	77.02631201329187
1999	79.19092198834402
2000	78.53680654477418
2001	77.49141611065616
2002	76.79485774932235
2003	76.13139076202106
2004	75.40208480836631
2005	74.53114725885904
2006	73.93289510877717
2007	70.93796267825195
2008	69.10432116775306
2009	67.58898978817172
2010	67.0193062721186
2011	65.0587532169573
2012	65.4204951145541
2013	64.8734283432086
2014	64.91976455756759
2015	65.98910356892644
2016	65.8398333350138
2017	64.42175111013123
2018	63.94654056439247
2019	63.371957605183525
2020	63.8370374359811