Year	% of total merchandise exports
1960	5.421772796800324
1961	4.587988353984698
1962	4.627066330093083
1963	3.876698512024989
1964	3.5833578280736447
1965	3.535834719142646
1966	3.1310615465623117
1967	3.103842947525338
1968	2.7231244284755807
1969	3.1069748294881996
1970	3.469564187172188
1971	4.305454761968342
1972	4.319249707611303
1973	4.043730670653502
1974	2.6582716206816013
1975	3.1016015228384908
1976	2.7703233725360565
1977	3.715976143595881
1978	3.2765097572508726
1979	3.2035434840928065
1980	4.921559678136868
1981	4.678103430629328
1982	3.7278464292980047
1983	3.4024397446947443
1984	3.077226553745258
1985	4.206244658895919
1986	3.95739956495086
1987	3.813850325010863
1988	4.578218203256699
1989	4.588351203963447
1990	4.464616646156415
1991	5.1032604486367195
1992	4.813811983952295
1993	7.255019066115576
1994	8.420822181187333
1995	9.38243989797006
1996	10.691073984586202
1997	11.342949317416942
1998	9.533312512096767
1999	13.708660402645364
2000	15.145558807640919
2001	13.610415114968713
2002	14.792045858121183
2003	15.427299839089478
2004	18.199084792141
2005	19.604960486574544
2006	19.504906849626956
2007	24.873964714150674
2008	28.174649710809025
2009	25.39879663650509
2010	25.882260386619432
2011	26.28226033633842
2012	29.210038077238583
2013	31.40088451877486
2014	32.75654152868289
2015	29.728020504401613
2016	29.315360012754887
2017	33.0093542202645
2018	36.30340714887399
2019	35.395084712167545
2020	31.70746335484686