Year	% of merchandise exports
1970	18.76992819165405
1971	17.36206912806101
1972	17.989720755231183
1974	15.491831074335634
1975	13.178530949474043
1976	11.440742423540389
1977	12.011166813198416
1978	12.028969947863246
1979	11.202136988285316
1981	10.335170066070793
1997	7.153084061228144
1998	5.83464614744229
2000	5.327531556758749
2001	4.884683514540976
2002	4.5840696077502665
2003	5.131883316990554
2006	3.87475271853105
2007	4.419580854761592
2008	4.331870659254171
2009	3.7853212120109596
2010	3.792924686092528
2011	5.341925322035507
2012	5.842984315963332
2013	4.154660520940255
2014	3.38257294899183
2015	2.730117406492675
2016	3.70113745233845
2017	3.640624383020468
2018	3.5928638208158725
2019	3.667352861374594
2020	3.7741842077984518
2021	4.320439578790518
2022	3.389925005262404