Year	% of merchandise exports
1970	1.4304175170865194
1971	2.56736758465939
1972	1.4998865832275747
1973	1.9109617258558507
1974	0.6600001381145518
1975	1.1448196448482144
1976	1.3117415322298
1977	1.4413699424471746
1978	1.456817680972988
1979	2.040200105886235
1981	1.8371553576412796
1997	2.245703288178075
1998	2.8034960963978404
1999	2.580413296111857
2000	2.8848856127743963
2001	3.7634449196517683
2002	4.386937727903409
2003	2.9463541474182215
2004	5.1157504829548
2005	6.582782694584742
2006	8.768931357675411
2007	5.84190499494952
2008	4.559436784338435
2009	3.98288323079527
2010	3.259410379835956
2011	3.286053064660868
2012	1.9217016733694743
2013	1.9230388657069404
2014	2.834033332943665
2015	2.2898349410020074
2016	1.870662029374641
2017	1.7354588359454555
2018	1.7182612439195173
2019	1.3455164161343716
2020	0.6204803756638962
2021	0.4516999367062632
2022	0.1776820057272706
2023	0.17292408476813736