Year	% of total merchandise exports
1960	3.160846291103747
1961	2.3600439077936337
1966	1.4166130070830651
1967	1.7699115044247788
1968	1.7216470021671082
1969	1.6026675271592987
1970	1.5092453773113443
1971	0.7953918888797644
1972	0.9775064217175069
1973	0.32665528322497855
1974	0.5048187241854061
1975	1.7306243696084231
1976	0.5759683714405212
1977	0.12447839065497042
1978	0.14107005788021493
1979	0.8146501161396027
1980	0.776634392254141
1981	1.1238709958852318
1982	1.691634977012656
1983	1.103559756178137
1984	0.3747331719324215
1988	0.6767325866325508
1989	0.4174981540393951
1990	0.32233193003657606
1991	0.36476721018286445
1992	0.2517509065888035
1993	0.4260346382230369
1994	0.3830303216528232
1995	0.3916535436266696
1996	0.10016943572659422
1997	0.4944012335794071
1998	0.34231219746981034
1999	0.40926719545733986
2000	0.2437022654314021
2001	0.1303306038152756
2002	0.31926205017676035
2003	0.06080359434727957
2004	0.0861173770073505
2005	0.10601953563988108
2006	0.028530970720040905
2007	0.07548152020722391
2008	0.4639901755046493
2009	0.20973692190873572
2010	0.13702364790602461
2011	0.19883472938913566
2012	0.18187423546510695
2013	0.18456671686926965
2014	0.16133006041182937
2015	0.2478809792509851
2016	0.42054253500475086
2017	0.48509874785720564
2018	0.4146953902883476
2019	1.0266963075877535
2020	1.026696284161795