Year	% of merchandise exports
1970	3.1506998875729795
1971	3.239698490404133
1972	4.25194355800728
1973	5.642680220865894
1974	3.3213313832795603
1975	2.6000536050410448
1976	15.015573523555844
1977	18.586337827588462
1978	15.890374100519269
1979	5.42771547909492
1981	4.568009266001928
1997	11.293787670824134
1998	10.430672185139995
1999	9.58382436695802
2000	11.632048186312922
2001	13.364137336739851
2002	16.572966679215327
2003	18.71699073936781
2004	23.909537193171023
2005	14.939852085911207
2006	16.278535589088392
2007	15.750715915295476
2008	7.777960438763953
2009	5.047823415443363
2010	4.413108798362691
2011	3.5817799408758955
2012	2.3756512274869444
2013	2.9602661154616983
2014	4.175400658771688
2015	4.399262723660508
2016	6.251527219252931
2017	17.05406232905306
2018	2.811528943514054
2019	2.1114830913036013
2020	1.0735303553821307
2021	0.7312224481545004
2022	0.39941250514421556
2023	0.6935596123846428