Year	% of total merchandise exports
1960	4.538852578068264
1961	4.299334412664148
1962	6.435309973045822
1963	5.375864376533571
1964	11.872665259054735
1965	13.991614453290621
1966	8.390739460748833
1967	2.908732001857873
1968	7.1240805920426515
1969	6.8757092615949995
1970	6.379831058437878
1971	6.790590712606126
1972	5.792805328082979
1973	4.792408456610941
1974	4.009439714467189
1975	4.851878235066393
1976	4.307097047740378
1977	4.36999491148618
1978	4.6275066232804605
1979	3.5298724137696302
1980	9.435965446040056
1981	5.777851851887822
1982	5.905437868830128
1983	6.248688793102134
1984	6.9492534917060205
1985	6.017689342151192
1986	7.770198168537022
1987	8.217644504154501
1988	9.50209233529431
1989	8.597864958827502
1990	8.615986913736041
1991	8.190690839079618
1992	7.675930481387612
1993	9.161613841590626
1994	12.200314587172617
1995	14.011528536247805
1996	11.752121174623719
1997	13.228728697373548
1998	14.09462086308726
1999	12.74915551931542
2000	10.350501031398917
2001	10.485979502528478
2002	12.558118714106618
2003	12.30283507518783
2004	12.123666787865712
2005	12.965625231181216
2006	13.090255182253896
2007	15.204212338418888
2008	12.264123766445378
2009	14.847813790185857
2010	14.044977065795514
2011	14.055581380791827
2012	15.071728512759272
2013	15.31634780856721
2014	16.368827561893397
2015	19.33499860845819
2016	20.82003207362847
2017	18.74683960208019
2018	18.15956792306846
2019	17.79739074229081
2020	17.333877893665633