Year	% of total merchandise exports
1960	4.375569735642662
1961	4.366812227074235
1962	3.451109285127362
1963	3.004291845493562
1964	3.7568306010928962
1965	3.6093418259023355
1966	3.2577079697498545
1967	3.2667876588021776
1968	2.266726052238094
1969	1.9556709676470156
1970	3.091011654796346
1971	2.3021805965848823
1972	2.8229472191717986
1973	2.2155610030779913
1974	2.494879011441038
1975	2.703938966469955
1976	2.3327177444552545
1977	1.8374955865981244
1978	2.4508410027317638
1979	3.2835642195718604
1980	3.8644940509653667
1981	4.741204729693433
1982	3.8636137111169506
1983	5.6862625622107625
1984	7.166495989472074
1985	7.166495989677328
1986	7.1664959898432095
1987	6.511778030858556
1988	3.5941217667469787
1989	3.594121766738649
1990	6.316772128367331
1991	8.350776393669976
1992	6.942958487250175
1993	7.979488773092863
1994	8.339154878173765
1995	7.0976550657138535
1996	5.677933285540835
1997	7.489237176065829
1998	10.87345194321394
1999	9.958845698081486
2000	10.561651079437286
2001	10.17018118431593
2002	9.118351647694576
2003	9.42960418389629
2004	9.168344444418047
2005	8.117242753712947
2006	8.40640144137073
2007	8.504353289129494
2008	8.096701288485452
2009	8.714275772797432
2010	10.254246079307288
2011	8.914239485892752
2012	9.026770083300793
2013	10.260200632262242
2014	7.924224020759661
2015	10.164309500728908
2016	10.990517341920869
2017	12.43104277787793
2018	11.911224491424582
2019	9.285781216671658
2020	10.526912769892592