Year	% of merchandise exports
1963	3.744279435142857
1972	8.780329165958173
1973	8.48839128342107
1974	8.585304413115939
1975	9.086077589581818
1976	7.50244479973067
2000	4.691456980395427
2001	5.558805466087151
2002	5.340807884061629
2006	6.123061525217987
2007	5.9696153081129815
2008	6.558300935848284
2009	4.239064156924069
2010	5.64523362124451
2011	5.280643149212231
2012	4.600408113575968
2013	5.094392018445576
2015	9.914996350188385
2016	9.305761008646332
2017	8.654364143460098
2018	7.937507787097394
2019	9.099208416415776