Year	% of total merchandise exports
1963	0.06622516556291391
1964	0.1212856276531231
1965	0.7530930607853685
1966	1.6357206012378427
1967	0.05068423720223011
1968	0.6160751611696628
1969	0.49453582937534996
1972	0.3498396181768128
1973	0.030618422548148626
1974	0.5811127855302217
1975	0.4366699478771644
1976	0.0009245000435835735
1977	0.3512708806808602
1980	0.24271108879285008
1981	0.016085269893682082
1982	0.15788814017509262
1983	0.19000083333698833
1984	2.04589825926799
1985	2.7263532184035175
1986	0.910567527467312
1988	0.5075095264529264
1989	0.5434894247817784
1990	0.19680879822608055
1991	2.0566925455281826
1992	2.645345861258085
1993	0.4929175646497536
1994	0.21649779935373595
1995	0.4365549461924433
1996	0.40219445765942474
1997	1.549260979216027
1998	0.11134929387800806
1999	0.05003436704259535
2000	0.8055784017773806
2001	0.355735308827235
2002	0.7569544783769284
2003	0.448237702471436
2004	0.2702840347330821
2005	0.3606348384654735
2006	0.282407714996327
2007	0.5173312594046549
2008	0.6104743527499891
2009	0.8855495572891815
2010	0.6777930386638673
2011	1.0412048163448893
2012	1.0598923878818822
2013	1.6909822635737926
2014	1.9551045664765831
2015	0.6478376110264731
2016	0.6980804330203092
2017	0.8734903262442674
2018	0.6598092983046147
2019	0.6947746586810282
2020	1.619717545104759