Year	% of total merchandise exports
1969	0.386583850931677
1970	0.32068361753958585
1971	0.14531970334736422
1972	0.6283403479686563
1973	0.020328272561478504
1974	0.27256052615038256
1975	0.03009062960960038
1976	0.6404158999577433
1977	0.00829445308449974
1978	0.1240479633478126
1979	0.07608049588180352
1980	0.06971488377469914
1981	0.4723107242177204
1982	0.7602501827213516
1983	0.6622323249645168
1984	0.5816639908705941
1985	0.12684934134242348
1986	0.23312827210136214
1987	0.24197380425748571
1988	0.48517386382634575
1989	0.28229505804100374
1990	0.6173446573200335
1991	0.332136659387308
1992	0.23877892061101041
1993	0.030097749107449348
1994	0.11573679845217966
1995	0.2081380071892152
1996	0.44230283955333194
1997	0.31307575264420473
1998	0.6882793299432792
1999	0.11412787302234652
2000	1.8113750217734679
2001	3.0966070717476515
2002	0.6707037774571729
2003	3.6527308784261745
2004	1.2878649468176615
2005	1.1915993309385524
2006	0.8640676198592582
2007	0.8032953156075544
2008	3.4097683345719068
2009	1.8773721179917557
2010	1.963079301462768
2011	1.911889378967698
2012	4.950292069127429
2013	8.297981497942935
2014	6.8285734355068906
2015	5.58180581991245
2016	2.9504133037907088
2017	4.39652740357982
2018	3.330389766862216
2019	3.255127899634765
2020	3.919590344360144