Year	% of total merchandise exports
1960	2.997436523058565
1961	2.7047770892960084
1962	2.7120224364081222
1963	2.8343494289043583
1964	2.747274844479218
1965	2.5794583631891457
1966	2.215623795509547
1967	2.175357537184213
1968	1.6018051310103045
1969	1.1928285950653836
1970	1.1525104169529508
1971	1.1470432485340716
1972	0.9429442297973026
1973	0.8913643884772606
1974	0.9856269989710749
1975	1.137370257083089
1976	0.9108725570916166
1977	0.8817533364742876
1978	1.0110685126133385
1979	1.0072960062102037
1980	1.058300648701775
1981	1.1086937126950618
1982	1.226533089530093
1983	1.2076907559472068
1984	1.228725758431115
1985	1.2419990116738884
1986	1.2207639608622252
1987	1.1056104473111732
1988	1.0898527054856013
1989	1.0347171168120393
1990	0.931652115310782
1991	0.8403143415914172
1992	0.8117674214288227
1993	0.9315724066447864
1994	0.8588796129344541
1995	0.9273087755679121
1996	0.9189229689481773
1997	0.8966109346743528
1998	0.8522120331453207
1999	0.8444602043870628
2000	0.8346444586794124
2001	0.8143133249977976
2002	0.84961170265876
2003	0.9177049782130797
2004	1.0221138754859183
2005	1.1406470880107262
2006	1.2150609162399015
2007	1.3591477419847224
2008	1.4612985688094247
2009	1.651353625986003
2010	1.7679639012559005
2011	1.7789766003339351
2012	1.859225544204859
2013	1.7068006493963523
2014	1.6817173052838086
2015	1.8545414687722546
2016	1.7981422750761742
2017	2.003005886542585
2018	1.9855509558260886
2019	1.92419593576653
2020	1.676534764611607