Year	% of merchandise exports
1963	0.1489019233360411
1964	0.3330558123401934
1965	0.6598346005928681
1966	0.8462239358557238
1967	0.5304355609769791
1968	0.4399858145458934
1969	0.44624841010358324
1970	0.391771982392761
1971	0.3653019295178616
1972	0.3135222778323606
1973	0.24763630819870527
1974	0.3987214065854703
1975	0.5946401920467241
1976	0.8178807366371976
1978	0.2603953073865754
1979	0.6763146705028742
1980	0.5358624767444041
1981	0.4534683432572988
1982	0.47341791529133015
1984	0.29421963249974564
1985	0.43196168688105946
1995	0.3835737800392493
1996	0.3601690588862818
1997	0.7476963482101227
1998	0.3824160088709147
1999	1.3386722484849403
2000	0.4609377221714953
2001	0.1791004118441976
2002	0.33023319058511613
2003	0.4109956005154699
2004	0.59751495834652
2005	0.40215504775450606
2006	0.3490353726795336
2007	0.33520786538397407
2008	0.5451785761447787
2009	0.2494998248672547
2010	0.21443110919565062
2011	0.40027989427109295
2012	1.0407914490062538
2013	0.08363332613978693
2014	0.558258819063773
2015	0.4216944834672717
2016	2.2390226162648466
2017	0.8187290400622665
2018	0.6860444018917451