Year	% of total merchandise exports
1960	1.240610061461416
1961	1.2942191544434858
1962	0.5048943843379702
1963	0.8590102707749767
1964	0.886331830197481
1965	0.6114083234905857
1966	0.6859414065004167
1967	0.985136536467335
1968	1.0224104099969018
1969	0.5483929544216452
1970	0.267695423963153
1971	0.7060524362130269
1972	0.8376109613135498
1973	0.8505016572510335
1974	1.6269907047317889
1975	2.26280198581168
1976	0.7323046377188672
1977	2.1981554397833536
1978	1.259071925668649
1979	1.1091740942927306
1980	1.0157584809529119
1981	0.6074382365517972
1982	0.8115283555944822
1983	0.6383801298899968
1984	0.8123152568899478
1985	0.8474343581589583
1986	0.6912142813029218
1987	0.8630568801945265
1988	0.8540982436098814
1989	0.7851651331288616
1990	0.7620221358346834
1991	0.8403820506952748
1992	0.9134279197179866
1993	1.053477546027466
1994	1.0135787190362753
1995	1.0262111018219793
1996	1.2060113987446546
1997	1.2591967809292466
1998	0.9890305565069923
1999	1.4662613511125542
2000	0.7099630837848744
2001	1.436409534778057
2002	1.8638799285283982
2003	1.556583972319022
2004	1.3969233089281763
2005	1.10954664006477
2006	1.7067585999050001
2007	1.6251296530939967
2008	1.457572206632356
2009	2.504699403997328
2010	2.347754380151375
2011	2.359471948473223
2012	2.068819541564716
2013	2.4996687777675843
2014	3.1583206182362744
2015	3.98843901508919
2016	3.867544903966063
2017	3.1716328253258994
2018	2.838613894077934
2019	5.068489965670495
2020	9.054643830206004