Year	% of total merchandise exports
1964	97.05882352941177
1965	98.18181818181819
1966	95.65217391304348
1967	90.9090909090909
1968	90.74074074074075
1969	95.51520794537555
1970	95.55555555555556
1971	96.82539682539682
1972	94.11764705882352
1973	83.42245989304813
1974	91.86403336218429
1975	92.91065482796893
1976	93.0018953200175
1977	91.43831126261965
1978	84.56680481547266
1979	85.02824858757062
1980	85.13111348194732
1981	69.56949569495696
1982	75.36343304445066
1983	88.46596136154554
1984	80.77892434257454
1985	95.81850860140116
1986	83.69409745399065
1987	90.04422781839516
1988	75.51728488518799
1989	74.44959442527531
1990	76.34244050836068
1991	75.22396695888172
1992	76.30005452401367
1993	76.30001074415284
1994	58.18742538873604
1995	94.67138744023195
1996	93.88730673246204
1997	90.576925871267
1998	85.78514199824403
1999	84.12261314482087
2000	99.13221908685499
2001	98.67819231664758
2002	80.7016730896832
2003	89.85470964799137
2004	85.55742943172727
2005	85.07126507807156
2006	83.50537654009483
2007	94.10508456851001
2008	94.26776531775441
2009	88.66328752339996
2010	92.41749156028722
2011	86.67066747698216
2012	85.41976503747915
2013	74.74049612717846
2014	82.65789961558264
2015	67.56523050879558
2016	52.553327912345495
2017	58.6814529125423
2018	52.84955319400678
2019	51.24352678093588
2020	31.326904796631343