Year	% of total merchandise exports
1960	0.594069909298255
1961	0.5038399452135205
1962	0.4449838187702265
1963	0.5043614866261523
1964	0.49879081015719473
1965	0.6708015910469899
1966	0.7728116347704385
1967	0.7754368959717194
1968	0.7650137054572639
1969	1.0481140417089003
1970	0.8010085337470907
1971	0.6746652756042427
1972	0.85128055878929
1973	0.9821372479215965
1974	1.138763197586727
1975	1.0889292196007259
1976	1.122384359378579
1977	0.9139033727521612
1978	0.817401706066249
1979	0.787346150752152
1980	0.7864133680151413
1981	1.1369898987657334
1982	1.0253314930933333
1983	1.1936681649403948
1984	1.1839264572741834
1985	1.3277657535544334
1986	1.4289299578689936
1987	1.3536323236585655
1988	1.1505491032630166
1989	1.2351199908302575
1990	1.0831852171653358
1991	0.8647153242681865
1992	1.1877870330550406
1993	1.6853591890940416
1994	1.4711071211135458
1995	1.7594474496854493
1996	1.9752759336982204
1997	2.255663098144011
1998	1.9980524191973599
1999	1.5072784502545775
2000	1.8185439487000066
2001	1.8623304907469125
2002	2.239230975523627
2003	2.4446693702043896
2004	2.699022820759172
2005	2.7793797753496303
2006	3.319456169838152
2007	3.5522088491093258
2008	3.616716856849062
2009	2.9944867701575535
2010	3.2075158373910555
2011	3.47481488065332
2012	3.160857487998464
2013	4.141179124057808
2014	3.3672350728736484
2015	2.3607967902870213
2016	1.9827490304095075
2017	3.396511829671983
2018	2.437074956916305
2019	2.782869176658826
2020	3.854995641207736