Year	% of total merchandise exports
1960	6.383754863813229
1961	6.492788154703655
1962	5.641922222747247
1963	5.9906629318394025
1964	5.152104166178778
1965	5.106639925815704
1966	4.053869291769209
1967	4.078044428115938
1968	3.6524658093743683
1969	3.549637155124954
1970	3.4450252106978434
1971	3.2933481399341478
1972	3.151707925038575
1973	2.786198497835956
1974	1.593135628404749
1975	2.035221601078215
1976	1.3109317094611894
1977	1.5405640346728102
1978	1.6326789047040138
1979	1.650382263204839
1980	1.585826924390862
1981	2.8022678312435843
1982	2.5427140805807276
1983	2.5237822946520407
1984	2.6522800928118926
1985	2.7120915630953495
1986	3.629036126370391
1987	3.356117514469903
1988	3.686478350871307
1989	4.283514729470909
1990	4.763561341804529
1991	4.981170680978616
1992	4.904632636546884
1993	4.721041625526241
1994	4.375572069835267
1995	4.159811999243842
1996	3.5883047746138756
1997	3.531457001656109
1998	4.406863640749948
1999	3.6089124457021096
2000	3.9324509995950887
2001	4.75687891112333
2002	5.286002935275345
2003	5.242369214549112
2004	5.676793790509644
2005	4.5924202919648796
2006	4.607104227058917
2007	5.84831718573813
2008	6.834841139494108
2009	8.58940137405333
2010	7.541528225305523
2011	4.549417702199252
2012	4.458939681137716
2013	4.538960599115919
2014	4.575155994947091
2015	4.989217763647962
2016	5.059470391710122
2017	5.408766263318101
2018	4.226294950336875
2019	4.5341887664769045
2020	4.990723865356554