Year	% of total merchandise exports
1960	2.5210571613689328
1961	2.0199868483203822
1962	1.7643556854467717
1963	1.7209454307809606
1964	1.6623908057000825
1965	1.7867525381278233
1966	2.815591096274609
1967	2.835895791806638
1968	2.4497855867363567
1969	2.639587532331093
1970	2.428773050855344
1971	2.0653230796428885
1972	1.8668207868211102
1973	2.218568665377176
1974	2.1755798838201246
1975	1.9581911262798635
1976	1.776793723945049
1977	1.6252331864094842
1978	1.7609386169844274
1979	1.8017736299652432
1980	1.5996583712668428
1981	1.3241348288237194
1982	1.450465215341947
1983	1.4845363974973618
1984	1.5304116996017116
1985	1.4794547609640458
1986	1.6986296251319464
1987	1.6134195043136297
1988	1.6823672921587347
1989	1.7574712897320555
1990	1.8150458282563908
1991	1.6853969680714163
1992	1.9489854138584708
1993	2.5652981812237337
1994	2.8035368548337067
1995	2.6014447919734027
1996	2.5568370568645977
1997	2.6086552902925773
1998	1.7095871514134855
1999	2.0361353917858738
2000	2.0254289452876537
2001	2.2304096534045277
2002	1.983372307725339
2003	2.4164186891526813
2004	2.553996785521029
2005	2.28008388140687
2006	2.1539625021936013
2007	2.645189193444403
2008	3.0519649083669718
2009	3.4028570173786155
2010	4.022496493511805
2011	4.158981763796159
2012	4.8183534666277605
2013	4.800219137391433
2014	6.48777244042829
2015	7.231740669646158
2016	5.687307820547309
2017	6.167582297543675
2018	6.9589352938275155
2019	7.662380085248009
2020	6.070079610965403