Year	% of total merchandise exports
1960	100
1961	100
1962	81.28654970760235
1963	82.32044198895028
1964	87.66666666666667
1965	85.87360594795538
1966	86.94444444444444
1967	85.8934169278997
1968	89.29503916449086
1969	84.35274628342763
1970	83.58089848921777
1971	77.00804825383229
1972	82.36171906088342
1973	88.10406525033045
1974	86.28469819095585
1975	87.37668820896828
1976	84.45176434222347
1977	85.30668045107667
1978	72.95153135055075
1979	68.88920049545445
1980	56.37093905620109
1981	55.515979976896425
1982	60.71323662328272
1983	55.5085497312365
1984	69.32960897867851
1985	75.64886390533057
1986	73.80513664174971
1987	71.74097143297689
1988	73.47706047187292
1989	65.5008915710829
1990	57.53347105423979
1991	46.0896134922002
1992	52.17560576239865
1993	43.1418322572692
1994	47.22489303605395
1995	51.48010774013092
1996	45.40764451436121
1997	50.61309400992576
1998	55.920024750518735
1999	42.027384048214515
2000	26.803929572229823
2001	22.554744691241098
2002	26.650368522973782
2003	27.859490518610297
2004	19.522117895907858
2005	13.462795769949768
2006	9.552081295412842
2007	7.312586051547744
2008	6.811878323909534
2009	8.495651156546055
2010	23.61186015121387
2011	13.0545019950439
2012	26.312020133847426
2013	18.43058696017379
2014	15.46807682010542
2015	18.315205880974446
2016	14.691115185032388
2017	16.608532201682607
2018	13.484435387470775
2019	11.620932550196486
2020	11.124193057062527