Year	% of total merchandise exports
1960	2.0554826143107476
1961	2.1813744040739533
1962	1.7078018527318533
1963	1.769847590019713
1964	1.9020171439957858
1965	2.2630232217162725
1966	2.063526411206844
1967	2.2877367854070028
1968	2.3282585807732104
1969	2.2536145664221108
1970	2.3616645057331924
1971	2.6907147884676905
1972	2.277614132175085
1973	2.4098390729486696
1974	2.7884845062058448
1975	3.1091162390060476
1976	2.7051155369648616
1977	2.8166122973331364
1978	2.8572444927664025
1979	2.6752744325716566
1980	2.741272617282507
1981	4.554211661941982
1982	4.99918114813318
1983	4.733090511471221
1984	4.646605594150959
1985	4.432178188588681
1986	4.5681994690345
1987	4.5354543508351375
1988	4.33654976126925
1989	3.4835581225101158
1990	3.1982356517783668
1991	3.320896669471608
1992	3.262018971448138
1993	3.2990994989733706
1994	2.9967508124005704
1995	2.9170810673507837
1996	2.820498608673527
1997	2.7333135131041923
1998	2.872220931017283
1999	2.785069962060113
2000	2.4808240186046726
2001	2.9269726509513516
2002	3.138007686738763
2003	3.0883899047819052
2004	3.3264011263342184
2005	3.360586799237141
2006	3.444435535851879
2007	3.8130513562441313
2008	4.56263764878778
2009	5.0045979119700394
2010	4.80239469341489
2011	4.552737073625726
2012	5.208074293516373
2013	5.175707984361642
2014	5.409568027926436
2015	5.547576350586947
2016	5.439449000834432
2017	5.069063819835501
2018	4.691747634081372
2019	5.079834170088747
2020	4.8427314872568665