Year	% of total merchandise exports
1960	4.009682583063288
1961	3.9808276316270903
1962	3.4614065180102918
1963	3.0778874784516534
1964	2.7595054180200345
1965	2.817256961098629
1966	3.247194433380971
1967	3.1209937668538084
1968	3.195328656583269
1969	3.2712251713833713
1970	2.6735286744429536
1971	2.8888948469086815
1972	2.926433815553602
1973	3.0385990874337154
1974	3.3467513680105663
1975	3.708509215048555
1976	2.860924565762208
1977	2.3510321540537844
1978	1.9591911680323166
1979	1.8892529441251897
1980	2.565589625894243
1981	3.1088141926272463
1982	2.521962154411616
1983	1.607232346694455
1984	1.5061471604204584
1985	1.7009627955016575
1986	1.6775129073187276
1987	1.416330632895374
1988	1.3239469783016486
1989	1.3403967938220256
1990	1.5823473160608104
1991	1.6091723558039606
1992	1.540843199426913
1993	1.5815246499004891
1994	1.8687554695723492
1995	1.6043306021851615
1996	1.7044273581104041
1997	2.098597957495203
1998	2.1996646887892877
1999	2.327490990711244
2000	2.648730911236199
2001	2.2205610282483716
2002	1.4785872324609812
2003	1.582564406165537
2004	1.728027114793207
2005	1.6508911487456839
2006	1.6113499472516772
2007	1.7445366011408825
2008	1.8744479639755198
2009	1.700492424890736
2010	2.074993967051695
2011	2.3165350199797796
2012	2.1389578087672505
2013	1.9398778449047818
2014	1.7968543982507819
2015	1.699930166257213
2016	1.694491229090387
2017	1.7242974588019881
2018	1.5842088282078473
2019	1.6175131377042646
2020	1.5569621883576392