Year	% of total merchandise exports
1960	6.381039197812215
1961	5.5895196506550215
1962	5.1766639276910436
1963	5.078683834048641
1964	6.215846994535519
1965	7.2894550601556976
1966	6.9226294357184415
1967	7.6225045372050815
1968	5.487863073839596
1969	4.445776751165973
1970	5.4384651164325035
1971	5.385475143351982
1972	6.280042814050793
1973	6.069824253894061
1974	5.8477525938015225
1975	6.762434997454155
1976	4.4703437729416935
1977	4.913108774941
1978	6.441608308640255
1979	7.31779216338274
1980	8.239708472797618
1981	9.605708238933595
1982	6.920797731123655
1983	8.312049911131169
1984	10.787323858818295
1985	10.787323858707719
1986	10.787323859449284
1987	9.702125327740555
1988	6.445500294330951
1989	6.445500294595006
1990	11.071731575708004
1991	14.73805691077045
1992	11.74658846304084
1993	14.614884450601991
1994	13.479043134216628
1995	12.47339627843577
1996	12.382716793872223
1997	12.854998177417745
1998	18.539909426279266
1999	16.141380656136032
2000	18.972007769486794
2001	18.869167519398523
2002	16.772205538042044
2003	16.255958028992033
2004	17.060425643259226
2005	16.286785704066677
2006	17.234855075832222
2007	17.61624399078954
2008	18.743849694128524
2009	17.66459664782768
2010	20.59390998905237
2011	19.413668976881112
2012	19.770163887492682
2013	20.416903169958665
2014	18.177122687854766
2015	20.38022187688373
2016	22.420931791896468
2017	24.044126324823072
2018	23.57561766768324
2019	20.68699892246593
2020	21.565525284767734