Year	% of total merchandise exports
1960	3.14533622559653
1961	1.9239509165277988
1962	3.7240979568178525
1963	5.081903779182253
1964	10.741535526943252
1965	10.738178931851685
1966	12.046645982668236
1967	12.801150665228336
1968	12.142237640936687
1969	12.939494997617915
1970	13.481722765110387
1971	12.081456823967104
1981	35.10030036450675
1982	45.76105934069476
1983	44.305110164681196
1984	37.75295509117898
1985	31.522492893434162
1986	24.997856142765702
1987	30.23417555041319
1988	30.197510721362512
1989	29.335598621968863
1990	25.892205472391517
1991	3.0925691325644515
1992	0.6392453414724273
1993	7.312556763619926
1994	0.7571422377481322
1995	1.411835849130486
1996	8.089327520761454
1997	13.21878694135417
1998	16.269304491205823
1999	5.832504544707932
2000	7.208512692223319
2001	2.056098256250738
2002	6.768488877047633
2003	4.719132832133694
2004	9.27624935004491
2005	8.983710262879976
2006	21.46725333953043
2007	22.48034756268292
2008	21.757216255780946
2009	27.810936000974536
2010	30.47235310424488
2011	36.832444752348124
2012	34.573972463435545
2013	43.10685293382519
2014	44.9418466329513
2015	45.91132558611329
2016	44.59929320523399
2017	46.45283912716757
2018	50.84051525784263
2019	54.49914646701649
2020	68.77372789042172