Year	% of merchandise exports
1978	88.5085360910063
1979	86.33428235387748
1991	51.209142917748686
1992	53.89772373277153
1993	52.40047001205716
1999	82.96376549243614
2000	84.76617844577322
2001	84.47063703519667
2002	71.17315850062022
2003	67.37814843702726
2004	71.66226496061913
2005	71.98294816813745
2006	75.89667648580111
2007	76.3031032280954
2008	75.72343218778326
2009	65.65200073559618
2010	69.71568793446298
2011	70.9039610957859
2012	66.42690189759507
2013	70.9308263552376
2014	68.46496799564261
2015	60.64661735252656
2016	58.629152566523025
2017	58.418312312398704
2018	69.77849545217929
2019	73.47062789260174
2020	65.60907260695377
2021	67.95816650427038