Year	% of total merchandise exports
1960	9.929394941460362
1961	9.15
1962	8.269246016015222
1963	8.03146033426605
1964	8.03391479602474
1965	9.181499122587114
1966	8.831570188993226
1967	9.72483147309095
1968	8.51299060254284
1969	7.429827107259837
1970	7.136338107273238
1971	7.5011853959222385
1972	7.386950237456122
1973	7.311481621826449
1974	9.507898783727107
1975	11.391646924162163
1976	11.363315447613669
1977	10.15782010344511
1978	9.518694653984912
1979	9.967808245743319
1980	11.053528732081775
1981	13.137067892851956
1982	12.464179715484597
1983	11.31534755856399
1984	10.497455220134578
1985	10.457315303812896
1986	7.662494270928355
1987	6.721634305696145
1988	6.42297613461341
1989	5.968262319467791
1990	6.091738865240034
1991	6.202552458963501
1992	7.541398051236395
1993	6.692698796627358
1994	7.654116572393852
1995	7.343925597035519
1996	7.71813540818825
1997	7.958145011329076
1998	7.257124390515633
1999	6.819316113709722
2000	7.02344692280106
2001	7.884244418998445
2002	7.845423790127863
2003	7.9896299412977285
2004	8.790523615865048
2005	10.317617739097047
2006	10.60533349188257
2007	11.672670739420282
2008	12.877306273866775
2009	13.05692671077491
2010	13.220066783432388
2011	13.323279866346619
2012	13.889977167092587
2013	13.79908663008787
2014	13.238507377835631
2015	12.161567095097165
2016	11.75888081464922
2017	12.079335082070632
2018	12.039650065741418
2019	12.444425371355013
2020	11.787300224888883