Year	% of total merchandise exports
1960	1.9160211572484234
1961	1.616211828811091
1962	1.346817418288608
1963	1.331698198830915
1964	1.20043860801678
1965	1.4237734268841922
1966	1.8224463875820784
1967	1.8704475183221811
1968	1.6262257059724388
1969	1.421865542297055
1970	1.2505178010123534
1971	1.0968679465147495
1972	0.8890812054605424
1973	1.0279371057789441
1974	1.2473481955429642
1975	1.3158208723252598
1976	1.220266533561564
1977	1.0502631547667183
1978	1.2560406247779194
1979	1.3056936646318555
1980	1.1744930036784875
1981	1.3947507261389605
1982	1.3981165889825755
1983	1.4947419852929105
1984	1.3406862678682832
1985	1.6982472530218575
1986	1.5384441666610167
1987	1.3908543352297658
1988	1.3704148235387894
1989	1.41923703535344
1990	1.4602685144354164
1991	1.5778310674452696
1992	1.81684897855556
1993	2.4958933611319583
1994	2.494812758105586
1995	2.7399834123988187
1996	2.6534097784060253
1997	2.490867382614831
1998	1.8557621007186558
1999	1.7713245393954409
2000	1.946577928627093
2001	2.1984898976215885
2002	2.3056120324385128
2003	2.4808138641529665
2004	2.602352195499246
2005	2.572665892417095
2006	2.7348968743860653
2007	2.8632521535145745
2008	2.959196000486308
2009	3.6229202674976766
2010	4.121959148411089
2011	4.375434107795362
2012	4.603432186356078
2013	4.664983894826028
2014	4.860202387483948
2015	4.7050226342793575
2016	4.907591851243368
2017	5.222244396602684
2018	5.2324038585100086
2019	5.345655444370145
2020	5.6821542241203264