Year	% of total merchandise exports
1981	65.4745216898173
1982	39.53772878349031
1983	21.209659956450942
1984	27.247773657807922
1985	20.837516908218447
1986	38.3162264802028
1987	38.92191169331911
1988	35.9228298122375
1989	39.281153187816074
1990	68.92054596888443
1991	71.82965848194462
1992	48.90404846426625
1993	67.21591875644283
1994	64.41763288768104
1995	59.86621618452437
1996	71.99836529831876
1997	85.09528156911321
1998	80.33875365961049
1999	69.76570306198326
2000	4.668693154280741
2001	9.778644262429129
2002	10.770392858258488
2003	7.958704152361855
2004	4.153934855736464
2005	6.040695714576766
2006	13.739678991906915
2007	19.516442718781413
2008	38.241433041980535
2009	29.705878094457876
2010	55.38290963463609
2011	57.52660678041942
2012	44.059778550362324
2013	43.31741973974625
2014	43.583982642680205
2015	47.469273261735275
2016	45.440059302595294
2017	44.55066673984277
2018	46.36128607442887
2019	42.52642703677721
2020	41.697223159398575