Year	% of total merchandise exports
1960	14.22825989811422
1961	13.783333333333333
1962	12.685324665028144
1963	12.576571126068215
1964	11.765932309403016
1965	11.763599899724241
1966	11.898252704148343
1967	11.758205326555421
1968	12.36745565103774
1969	11.53862100418757
1970	11.95942151081157
1971	11.082661608977398
1972	9.875077431344208
1973	10.32777567260326
1974	12.80162169718999
1975	13.357467990523597
1976	11.982255483385108
1977	11.635024433041224
1978	11.076582486061003
1979	11.554124810921925
1980	10.414593129011223
1981	10.421732786771347
1982	11.25076757752533
1983	12.112842258141903
1984	12.335669489963847
1985	11.160118391271546
1986	10.516573147451842
1987	9.735529584982055
1988	10.251069908536396
1989	9.77835797890118
1990	8.944780043141876
1991	8.054600832620718
1992	6.844779352829591
1993	2.1898692471168237
1994	2.01164939937176
1995	2.0333549651312692
1996	2.2764630655274227
1997	2.2209436546756276
1998	0.9320306401702626
1999	0.3193129421063432
2000	0.36449046390760503
2001	0.4815410275467348
2002	0.7606894596335823
2003	0.8100202080720322
2004	0.6783434488645488
2005	0.4804306946533133
2006	0.2684237093215262
2007	0.23684890356767846
2008	0.24094108661919908
2009	0.21048390729974395
2010	0.23307719919706166
2011	0.15561555495452853
2012	0.23134329626030306
2013	0.1500987941557663
2014	0.2065125645960398
2015	0.17235200749045052
2016	0.11066127358800709
2017	0.07820922297739635
2018	0.11603489597705814
2019	0.11849459842167125
2020	0.04312283182915528