Year	% of total merchandise exports
1960	5.550057099352874
1961	4.810474537037037
1962	4.620699582553621
1963	4.193364207320941
1964	5.414671632086067
1965	5.14078110808356
1966	4.751781918219333
1967	3.513143141896101
1968	3.937052932761087
1969	4.6074329313315285
1970	4.603504750235906
1971	4.0977932041689185
1972	6.5110020839144775
1973	8.070399632180179
1974	4.066722517179172
1975	4.439474522402458
1976	3.61406165925985
1977	3.7338419578724755
1978	4.548370299375891
1979	4.426940889034752
1980	3.8715181099750002
1981	3.301305668149637
1982	2.5525913346738793
1983	2.8391469328893444
1984	4.000025663352066
1985	3.4293159663995576
1986	3.191476433648968
1987	3.038951165134635
1988	2.967271685890628
1989	3.4717415497007686
1990	3.0606487599131516
1991	3.5851563467481
1992	3.9149130077304433
1993	4.046528649506511
1994	4.279881233680014
1995	5.107095673794588
1996	5.168626869498445
1997	4.780692665012134
1998	4.981486789751419
1999	4.158637032706622
2000	4.292328370562867
2001	4.668997547841924
2002	5.168070684514095
2003	6.427508197384486
2004	5.885326851298109
2005	5.42630468549358
2006	5.192429772961817
2007	5.758301705912657
2008	5.084433805849632
2009	4.519079346562704
2010	5.001388182964195
2011	4.486542920558617
2012	4.996452928528888
2013	5.238503466628583
2014	6.44789682864418
2015	6.646330103733426
2016	6.479644615102612
2017	6.866119536007995
2018	7.6711036319597605
2019	6.915567485370756
2020	6.853110056966619