Year	% of total merchandise exports
1970	0.8802960816535924
1971	1.1076934202132742
1972	0.7328438236953513
1973	0.7126843511058735
1974	1.1286499947118946
1975	1.0485899178983853
1976	0.30971218189145916
1977	0.43570853186444775
1978	0.38337847766648553
1979	0.6337875864630694
1980	0.53482849464672
1981	0.5578452595589698
1982	0.5810861965307622
1983	0.4655604425587175
1984	0.5051958759035152
1985	0.6167078357157254
1986	0.8094956885591729
1987	0.728800973318702
1988	0.574964325751727
1989	0.8381851708601472
1990	0.8351492354132317
1991	0.40706464874151627
1992	0.5274612304278993
1993	1.5778422434818946
1994	1.484247133350989
1995	0.558109749531
1996	0.3316340346008374
1997	0.32121730665699044
1998	0.2574927501164676
1999	0.3867475965721244
2000	0.25648288958748944
2001	0.3173478953073128
2002	0.14420420571865677
2003	0.18888537361147145
2004	0.1846680908204599
2005	0.3480867041445984
2006	0.25311352077622273
2007	0.15393710804247349
2008	0.2317045613173632
2009	0.3192248451927506
2010	0.2784975996243544
2011	0.3445160850053777
2012	0.44134860293324707
2013	0.34388507306176597
2014	0.3343227228109719
2015	0.31117108836704765
2016	0.4269223175691919
2017	0.4173066447918622
2018	0.4028400068293053
2019	0.35839247210187736
2020	0.2995063211330375