Year	% of total merchandise exports
1967	0.24994861253854062
1968	0.29349481740164207
1969	0.21777637581287004
1970	0.23102369032135453
1971	0.19363626923382343
1972	0.2644947800149143
1973	0.22339614707351046
1974	0.3134263141112698
1975	0.3944098970590169
1976	0.6290163287427039
1977	0.3902006065038913
1978	0.5370070859035977
1979	0.38719800090638096
1980	0.2762961654166085
1981	0.15254856327452795
1982	0.25103970131009007
1983	0.340346249926558
1984	0.36426298181220984
1985	0.27631714743600144
1986	0.4356794961601675
1987	0.32236964271673796
1988	0.3865638076463798
1989	0.3598847310373337
1990	0.319641538529275
1991	0.335530846586117
1992	0.29205753077236996
1993	0.2978745831343028
1994	0.465803420348508
1995	0.4650068673416467
1996	0.454845342455852
1997	0.5179136637094278
1998	0.6062774650830903
1999	0.4620874561694903
2000	0.3278092248575162
2001	0.6376315918212674
2002	0.4682779230636591
2003	0.7872751583800932
2004	0.8401038115262706
2005	0.8829160442070468
2006	0.8479659717899559
2007	1.108401979445097
2008	1.3035471322958174
2009	1.1464435722729989
2010	1.0005205722824884
2011	1.112788634581605
2012	0.9557799210593328
2013	0.9540402973834461
2014	0.8378576749527213
2015	1.0020275762910211
2016	1.3869212122651968
2017	1.60790341998834
2018	1.2905320882097306
2019	1.2657544627557704
2020	1.2901916173346613