Year	% of total merchandise exports
1960	14.729751233225482
1961	14.268942914445043
1962	13.578748651564185
1963	13.04311877299599
1964	13.176390568319226
1965	13.351985437875008
1966	13.335564548026897
1967	12.31576246543319
1968	13.411412908048842
1969	12.527766395652268
1970	12.655159038013963
1971	12.366544948704574
1972	12.328288707799768
1973	12.199233556006952
1974	13.713759007876655
1975	15.759354365370507
1976	14.242020022366845
1977	14.304376966681435
1978	13.605687453074694
1979	13.296060922961415
1980	13.276587418060856
1981	15.013888734775099
1982	15.047422062119633
1983	13.260113347664648
1984	11.55682460090845
1985	11.74074316987677
1986	11.377774692561127
1987	10.0930113978523
1988	9.506004582444497
1989	9.140989073933929
1990	8.657807462567188
1991	8.78488987623994
1992	9.110633475304237
1993	10.162896091358995
1994	9.976035027832781
1995	10.40432368432101
1996	10.648607820000427
1997	10.592056684930373
1998	9.55013854235563
1999	8.733392647531607
2000	9.457803860278284
2001	9.81603473711678
2002	10.128351081547194
2003	10.531665187811146
2004	11.429803536126625
2005	11.494548994884578
2006	12.297383357486288
2007	13.193872438002096
2008	13.826295026805235
2009	13.76698436573216
2010	14.78789433640902
2011	15.49114146477506
2012	22.734458330986364
2013	24.77066222230296
2014	22.479385349102536
2015	23.021024023337098
2016	21.189203675212827
2017	24.80470175744809
2018	24.549513018698647
2019	20.81021071567446
2020	18.285422314647032