Year	% of total merchandise exports
1960	7.854837276792324
1961	8.468201986055355
1962	8.350979170991627
1963	8.713698180808922
1964	8.623059186988176
1965	7.886108714408974
1966	7.155735331209656
1967	7.465268441337278
1968	7.055030198031714
1969	6.160324080541199
1970	6.281603035013777
1971	6.110050084773839
1972	5.591872216414109
1973	5.218838004327844
1974	5.19986794263813
1975	6.62962998256163
1976	6.7500402820986345
1977	7.311959274848044
1978	6.380112318553994
1979	5.707003702264642
1980	6.459068208011735
1981	6.872632079961923
1982	6.663588231281452
1983	5.580825153400484
1984	5.095507572081089
1985	4.579626588140682
1986	4.243701239007168
1987	3.4924944326835843
1988	3.301156785164155
1989	3.1025527553425793
1990	2.7945484902468807
1991	2.7551987077637192
1992	2.6810734535670546
1993	2.3474289192095044
1994	2.009411947197787
1995	2.3971051482838313
1996	2.5704111586638816
1997	2.0797611381523433
1998	2.47748773682897
1999	2.2567603602824704
2000	2.5110567700505952
2001	2.411334408040039
2002	2.329232066425897
2003	2.2129293245561925
2004	2.070563913880468
2005	2.2461727468673196
2006	2.1570060715416783
2007	2.2420935784355756
2008	2.364422522453938
2009	2.62127745611251
2010	2.738542371123783
2011	2.831273972409768
2012	2.6229451811610756
2013	2.6758999736418216
2014	2.73724915100311
2015	2.5874381018598993
2016	2.3945310621554374
2017	2.177744357348617
2018	1.9342030110507675
2019	1.9249862019441282
2020	2.0539859011163624