Year	% of total merchandise exports
1960	4.13625304136253
1961	4.7868362004487555
1962	4.062288422478006
1963	5.321100917431193
1964	4.1156295933366
1965	4.646464646464646
1966	3.5406264185202
1967	3.2980972515856237
1968	3.8418500559492834
1969	2.6940970278677545
1970	2.888668982766235
1971	3.791629493828492
1972	2.5094016379742605
1973	5.08474998909066
1974	4.2518213143398205
1981	3.389804636741149
1982	10.77959524240575
1983	4.18279582332216
1984	1.9610366796621874
1985	6.767698460411589
1986	7.70220440988331
1987	9.015117713989897
1988	11.777693106045549
1989	15.572250289120431
1990	13.435101355596677
1991	5.385205931370874
1992	9.797913735670734
1993	0.26826552814705107
1994	4.168991621970931
1995	4.24859506477931
1996	4.822599457033617
1997	-1.5062542130496917E-09
1998	8.882695264879591E-06
1999	-8.935974036829161E-09
2000	0.7784052042339211
2001	0.6679956149360421
2002	0.7635891324971479
2003	0.9044351565128166
2004	1.1734834989310943
2005	1.7026702898651023
2006	1.9909198113600448
2007	1.9032867142992955
2008	1.9443580344354678
2009	1.849942247660597
2010	1.8769409958218783
2011	1.9203166943518015
2012	1.895626890692771
2013	1.877160690670939
2014	1.8383979352184097
2015	1.8087192679458513
2016	1.912634786405597
2017	1.7267270462602666
2018	1.042102836032138
2019	1.1353729977448632
2020	0.4158882008075292