Year	% of total merchandise exports
1960	2.891724293737104
1961	2.622671835547201
1962	2.613483328173916
1963	2.747817335513901
1964	2.674577484986844
1965	2.513281803152967
1966	2.1634532454367754
1967	2.131049569524115
1968	1.5707418585712853
1969	1.1662594775749164
1970	1.1254841788403613
1971	1.1274216454717692
1972	0.9196971963700328
1973	0.8671975267162617
1974	0.9648700510498341
1975	1.108356251012296
1976	0.8762523710330847
1977	0.8339333236291913
1978	0.9323185508513956
1979	0.9279028655719338
1980	0.9523347315965979
1981	0.9939862426060748
1982	1.0993182701348385
1983	1.0891207043942728
1984	1.0923489925820968
1985	1.1174590770118644
1986	1.1272775814488023
1987	1.0173716158313906
1988	1.0094106984978244
1989	0.9508422714657208
1990	0.8389376118804242
1991	0.7521287203774049
1992	0.724331506426531
1993	0.8533240215030834
1994	0.7859343575977161
1995	0.8247353622460504
1996	0.812869505916518
1997	0.7854595823171631
1998	0.7223679099530123
1999	0.7125404305036415
2000	0.700342621185056
2001	0.6787507494213433
2002	0.7260150285025706
2003	0.7973785448130526
2004	0.8974024038364512
2005	0.9931515221212833
2006	1.0592417154151668
2007	1.1902515037232582
2008	1.2556010110857565
2009	1.4180244635510184
2010	1.5039106154928905
2011	1.5104064933150978
2012	1.668169493323832
2013	1.5103415883068647
2014	1.4513388179270386
2015	1.5511019770722383
2016	1.482805325831638
2017	1.6497856130420363
2018	1.6783504974189827
2019	1.6270149689407134
2020	1.4129970567563082