Year	% of merchandise exports
1962	3.8791035108691743
1969	12.150772905884628
1970	12.122046176847714
1971	10.12973155440768
1972	7.76427427112911
1973	6.705172309490049
1974	4.146125104551778
1978	0.07469070675397067
1979	0.05795758017928278
1980	0.10377039093511427
1981	0.2231656546129797
1990	6.222597900164317
1991	4.856048960040243
2007	2.675426238796201
2009	2.002031472220721
2010	2.0376293176389773
2011	1.8203099218489818
2012	1.5667157794977231
2013	1.7073114960458067
2014	2.183667359419273
2015	3.243921350521759
2016	3.5430584083963974
2017	3.2888111877969037
2018	2.959997799261802
2019	3.54452524881699
2020	5.372857337429431
2021	4.73446732916134
2022	4.13015252901342