Year	% of merchandise exports
1967	2.645038176643757
1968	3.590970088254379
1969	3.0750120136354764
1970	3.631058162206964
1971	3.000468045954773
1972	2.5809469608048587
1973	2.752117808859531
1977	4.760480035681551
1997	8.098203898680117
1998	7.807292869499288
1999	8.894311743130459
2000	6.904033895189446
2001	5.214089966553691
2002	5.685244208382503
2003	7.41199982338085
2004	10.429597978632138
2005	11.326158999432149
2006	10.707398292119283
2007	14.00188645563307
2008	11.092041653153549
2009	5.757471514476465
2010	8.613302202920345
2011	9.913049667320449
2012	8.280403194013584
2013	10.831332538378229
2014	8.307531744358206
2015	7.628711201381204
2016	6.141970085354018
2017	3.1022450345500365
2018	10.442347332691996
2019	6.129152916176785
2020	6.981255873502494
2021	10.410108861005344
2022	11.048249329311124