Year	% of total merchandise exports
1960	0.037243947858472994
1961	0.06153846153846154
1962	0.09038322487346348
1963	0.22047678103899684
1964	0.21753908905506458
1965	0.06552221202987812
1966	0.9426082806347691
1967	2.60783586701273
1968	1.1590774689532821
1969	4.430149289962374
1970	0.7688611244593946
1971	1.001968151726606
1972	1.189361303614909
1973	2.0779220779220777
1974	1.25
1975	2.318011875962173
1976	2.476504854368932
1977	5.060696631067284
1978	5.537534416158879
1979	3.9066184733020206
1980	5.650067997117683
1981	6.628885874505307
1982	7.299464921052946
1983	4.9764247954012655
1984	4.926664370638794
1985	7.829122880777407
1986	6.225222039644737
1987	7.218932625987244
1988	4.927595899940373
1989	4.873199295600196
1990	5.1287973733845265
1991	6.093499010412005
1992	4.233086894744849
1993	5.19399571188207
1994	6.605069367639188
1995	9.080728596955206
1996	8.72969555490711
1997	8.339418665660364
1998	7.917433951112534
1999	8.728524791444487
2000	9.21691702622561
2001	10.79777241844515
2002	12.538044304319499
2003	17.38059057181593
2004	17.308953662606044
2005	20.665069802885856
2006	19.801590181005515
2007	21.132922596216645
2008	20.458958280570087
2009	16.28958636195969
2010	19.327084779415667
2011	21.860021303750102
2012	21.4091254988892
2013	20.809615631253852
2014	20.791069031103092
2015	19.350437264177938
2016	19.56830507797634
2017	20.45660344356825
2018	22.77010691413996
2019	23.752009142824107
2020	25.31122137719155