Year	% of merchandise exports
1977	44.183456865193875
1978	44.50467734063149
1979	43.37049383822719
2000	28.233558704857913
2001	27.43702596347284
2002	27.41436815678327
2003	27.691864367361383
2004	27.559060888750068
2005	26.064850459604642
2006	25.654149019502817
2007	24.71378943834537
2008	21.238103530515634
2009	25.34887065468238
2010	23.755538000812436
2011	24.307095303659004
2012	22.909198535873184
2013	20.667262062212664
2014	31.09335078170784
2015	27.058361683068487
2016	33.14477086213879
2017	32.510595663074895
2018	33.08840911004445
2019	30.79141695369809
2021	30.45526696570995