Year	% of total merchandise exports
1960	6.120975192541221
1961	5.349994388117775
1962	5.958395239729276
1963	5.193863819151997
1964	6.250610048965459
1965	6.112631042286179
1966	5.449230771529135
1967	5.723310155755743
1968	5.039336062888795
1969	5.124368133136368
1970	5.687345326665411
1971	6.936881299522455
1972	5.4763730140994245
1973	4.486485500194629
1974	2.4946130894815735
1975	2.940756097596914
1976	2.6187562893120258
1977	2.698067998528942
1978	2.893375706389346
1979	2.896762749298189
1980	5.626710191012024
1981	12.032519597137343
1982	14.695992247642007
1983	13.884771276393689
1984	12.199007369642935
1985	12.08698270486545
1986	10.035657514930499
1987	11.76098263205125
1988	12.136262078336198
1989	12.481055644103872
1990	9.986731618619798
1991	6.308122672767685
1992	5.923187133299524
1993	11.016245433424253
1994	8.720031832921855
1995	10.494102806760733
1996	11.330706128550904
1997	12.363572932056064
1998	12.856614059265874
1999	15.56554991820242
2000	16.602043980996804
2001	15.357247061288689
2002	18.083253152264323
2003	17.83283184142218
2004	22.23636440479072
2005	23.585244487422212
2006	23.651333622369975
2007	29.392935902453104
2008	31.322322183563568
2009	29.060574347254768
2010	31.273478725270138
2011	32.94837098379336
2012	35.659444018778835
2013	39.59531327483285
2014	41.4665110705051
2015	39.06106737226081
2016	38.40682996077175
2017	42.48836675830985
2018	46.57602331204888
2019	46.486287638949314
2020	46.949428500581256