Year	% of total merchandise exports
1960	4.659186750837018
1961	6.205508370563111
1962	5.44762710072931
1963	4.315612587839903
1964	4.297484207375668
1965	3.5185208103860104
1966	3.439275456508522
1967	3.8332628930323076
1968	3.5947507220896644
1969	3.6551293009963897
1970	3.843232007765597
1971	4.0926775104043935
1972	4.01718589595136
1973	4.594078886912902
1974	5.874530846557319
1975	5.336409846036807
1976	3.976503089353612
1977	4.101568039857686
1978	3.7175722773726787
1979	3.8963831867057674
1980	4.160744539760661
1981	3.884565884565885
1982	2.8541401825956316
1983	1.9343053278270277
1984	1.9592437717180045
1985	1.9536429445983536
1986	1.9750269229127033
1987	1.933637899959804
1988	1.7279581009591802
1989	1.776912381301269
1990	1.8115290050025017
1991	1.9666771687748237
1992	2.3276662870384537
1993	2.4961218084232373
1994	2.4041137303117237
1995	2.144056933239482
1996	2.086732614249268
1997	2.4810289293831533
1998	2.868044436029018
1999	2.29006453880407
2000	2.303418992898698
2001	2.378259812551422
2002	2.023341732546059
2003	1.7568258704939013
2004	1.9173893673275342
2005	2.251032379822118
2006	2.583784211299355
2007	2.760626031722031
2008	2.8074556380738294
2009	2.5592879938490043
2010	2.804348522486499
2011	2.775418002732918
2012	2.9156162040770326
2013	2.9839796512238093
2014	3.0359226640182086
2015	3.062816148821785
2016	2.768957081433265
2017	2.773856563568567
2018	2.7717504177163215
2019	2.7104792350687044
2020	2.2903614096310214