Year	% of merchandise exports
1962	0.1806904786475732
1963	3.7667211917015697
1964	5.871649703743258
1965	4.659653179363304
1966	4.964471578422928
1967	4.351396002346462
1968	4.127013478397935
1969	5.0355404263055314
1970	5.807845447960931
1971	5.503731679720836
1972	5.032712526533099
1973	4.354791327912244
1974	2.873485700903802
1975	3.3594015143054032
1976	3.6317432586326444
1977	4.937537745367197
1978	2.8873932971476344
1979	4.923058709364541
1980	3.8854053580057326
1981	4.310393993282374
1982	2.3482932028971737
1983	2.297909296690187
1984	2.364450541754132
1985	6.77495873277036
1986	5.068456793407669
1987	5.021951639424214
1990	7.37221216579258
1991	7.699365294362328
1992	6.762703800194042
1993	5.375650698014162
1994	5.893767498264468
1995	6.556619302027417
1996	4.492399758469323
1997	4.805648230764496
1998	5.8559757544225395
1999	4.2630013396628375
2000	3.3322754487970325
2001	3.989474826079538
2002	4.3503395843172905
2003	4.082452622367962
2004	3.219713767590694
2005	2.3250583859063805
2006	2.0881852878238747
2008	1.8846085457258552
2009	1.206386901685581
2010	2.3573078829314023
2011	0.8914434960403579
2012	0.04601820453965481
2013	0.4417798429598615