Year	% of total merchandise exports
1960	0.6802721088435374
1961	1.4050387596899225
1962	1.0959492854840442
1963	0.741503604531411
1964	0.12329286798179058
1965	0.613228208497591
1966	0.49071726506910934
1967	0.25374048473182254
1968	0.14365522745411013
1969	0.13990905911157747
1970	0.11426830197303267
1971	0.365277180919639
1972	1.2803115228037054
1973	1.7024851861678607
1974	0.7050206828342499
1975	1.0423810176930461
1976	0.3661102943296146
1977	0.8511964705318179
1978	2.1583579682880947
1979	1.3714794612044974
1980	0.6939892817210934
1981	1.4261684364777147
1982	0.8392703063336618
1983	0.604140243000623
1984	0.40192266679790667
1985	0.48132599884192245
1986	0.7908396750302163
1987	1.1178978578652201
1988	1.2994410878049878
1989	0.6880231684653604
1990	0.37552806045375653
1991	0.0460480141217344
1992	0.13508707208213785
1993	0.35523630045298826
1994	0.17526929418146542
1995	0.14769144915950622
1996	0.15296107150468438
1997	0.2129311203469789
1998	0.220144007353567
1999	0.19767792303011195
2000	0.20483749601189508
2001	0.29124254466900534
2002	0.5308739793225496
2003	0.7017036385154614
2004	0.6195912700734586
2005	0.6588668306640962
2006	0.8192451274992697
2007	0.8681679748707122
2008	0.8570477792270199
2009	1.1729686547670874
2010	1.5715381290770019
2011	1.9048200942669982
2012	1.7914086900234647
2013	1.9738968198623739
2014	1.751922330781983
2015	1.4903420258779259
2016	2.025318087251373
2017	2.1285360486331095
2018	1.9029377896799073
2019	1.812283870743632
2020	2.148900596883925