Year	% of total merchandise exports
1960	0.5013673655423884
1961	0.12062726176115801
1962	0.10960906101571063
1963	0.14917669382677007
1964	0.16232053435919913
1965	0.19660318841220806
1966	0.38813937399968496
1967	19.43379429046234
1968	17.845581014568907
1969	15.25147431677149
1970	0.039172325427470414
1971	15.040050987151817
1972	6.716464550835275
1973	5.738812347541405
1974	4.856440552900094
1975	3.8537779795035956
1976	5.189905932980287
1977	2.864265237050314
1978	4.434442104841405
1979	4.431176309803029
1980	5.443347068770939
1981	4.1736401037384
1982	3.6910557977920173
1983	3.7577361777412768
1984	3.875548463470012
1985	4.4171141820523205
1986	3.3152611464732082
1987	4.0045755565846015
1988	4.012749532377051
1989	4.00610793134279
1990	2.926394421805275
1991	3.9885141420798798
1992	4.659643181764976
1993	4.391142781149391
1994	4.028361661179894
1995	4.383898571937995
1996	4.363878916678069
1997	5.21676692868329
1998	2.7908047007690784
1999	5.315206306160845
2000	5.945644034080241
2001	6.75165319214146
2002	6.29892250219763
2003	6.103697693832187
2004	6.940058534363648
2005	7.149605019967574
2006	8.521908600256195
2007	7.780914539890631
2008	7.162914891706546
2009	7.42391122740656
2010	7.179846115458677
2011	7.585622057578536
2012	8.48818715398991
2013	9.88535870285186
2014	10.78924438515691
2015	9.462297440250792
2016	10.240412180068539
2017	12.98821233601152
2018	14.333799806384375
2019	15.91239591788172
2020	17.26561350171531