Year	% of merchandise exports
1978	11.48349134065113
1979	12.610147193708073
1991	19.277871069510674
1992	20.982015102772888
1993	25.406864642994513
1999	16.98198513965873
2000	13.95755983350147
2001	15.149304878658516
2002	15.216476144685128
2003	15.248172586107142
2004	14.402481918205265
2005	16.681418137373523
2006	13.821984884709815
2007	13.86977157070989
2008	14.947065628762944
2009	16.667124219543222
2010	16.265700944520365
2011	15.636965019357257
2012	17.550271735466083
2013	17.116247116634728
2014	18.051874479849058
2015	22.137308573121537
2016	21.823897568522717
2017	22.09311932716751
2018	23.770643030455215
2019	23.38764747317022
2020	26.271002730884977
2021	25.186959222260217