Year	% of total merchandise exports
1960	2.256030403156506
1961	2.4018855924277003
1962	2.6148089742880782
1963	1.8564026973242096
1964	1.6398571239726434
1965	1.8203349550659382
1966	1.7367958325116677
1967	1.93888487067818
1968	1.5152310179659225
1969	1.544972186317053
1970	1.5987648456550259
1971	1.701084683480265
1972	0.8615531361854332
1973	0.8903527350994894
1974	0.6896078590394695
1975	1.0059715990128246
1976	0.6171687098514396
1977	0.7311027339381142
1978	0.9471515661130966
1979	0.7448340074345466
1980	1.9464776769226395
1981	2.9175450187758
1982	1.681981682787173
1983	0.999315139376408
1984	1.5091338756971444
1985	1.3591640544053925
1986	1.9383683616729546
1987	1.9968930853446514
1988	2.064541403871322
1989	2.595006000423327
1990	2.5129971104673783
1991	2.0577855685791664
1992	2.2894734923584066
1993	2.734925132326466
1994	2.322300641309771
1995	2.276718729368743
1996	2.5385877631775866
1997	2.5734667878032225
1998	2.019357654364615
1999	1.743622287359433
2000	1.675535351558706
2001	1.9163556080300224
2002	1.7284856104314568
2003	1.4167102636105753
2004	0.9701941032042589
2005	0.572615537345934
2006	0.553633796756045
2007	0.9257377684879003
2008	1.1486851375546339
2009	1.0446359890651506
2010	0.7965881260643201
2011	0.7165464915121242
2012	1.009287590916513
2013	0.8925792875829209
2014	0.751265343884113
2015	1.0428702232117912
2016	0.9428921782786827
2017	1.109421596749157
2018	0.8520156476445381
2019	0.8119831137122285
2020	1.15675315822147