Year	% of merchandise exports
1970	77.87215097420763
1971	81.41452957149056
1972	78.28150084201941
1973	80.62253411426254
1974	84.47690922633562
1975	81.45615270622883
1976	78.95787481449308
1977	78.6322804110358
1978	79.65928142838233
1979	0.7277445922466852
1980	0.29052810092171116
1981	0.21328622183876475
1982	0.1297519789940531
1983	0.05702175420419755
1984	0.17561433622493022
1985	0.07261367625842105
1986	0.03429131073146182
1987	0.0042457299925219
1994	55.54908802678899
1995	53.12921698307402
1996	0.01763707792655611
2000	0.03954624530406781
2001	66.93351975828332
2002	69.36640396737909
2003	72.51859668704392
2004	75.54372596639153
2005	78.15928027956632
2006	80.58786269992267
2007	80.82879806586246
2008	69.06228493808601
2009	68.60204338232472
2010	74.34747562943976
2011	71.84416844130736
2012	64.14720337083706
2013	59.00278917043874
2014	66.8346508823664
2015	50.356660237273346
2016	45.01731531368491
2017	50.17711141842107
2018	53.32039332610762
2019	42.12821448382027
2020	29.819190132190336
2021	0.05209821003903616
2022	0.04261318872531563